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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 851. |
????What is Co-domein? ???? |
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Answer» Set b Co Domein is the 2nd Part Co-domein set B Set B ko hi co-domain kehte h |
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| 852. |
|lx-2l -3|>1 |
| Answer» Clear nahi haiWhatapp pr send kr do mereMobile no6391348273 | |
| 853. |
?what is complex numbers? pls ans me ??? |
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Answer» Wah yogita wah❤️❤️❤️?????My Whatapp no6391348273 A complex number is a combination of a real and an imaginary number.Z=a+biHere, z is the complex number, a is the real part of the number and b is the imaginary part where i (iota) = -1 A combination of real and imaginary parts is known as complex number Complex Numbers Class 11\xa0– A number that can be represented in form p + iq is defined as a complex number. [Where, p and q are real numbers and\xa0i=−1−−−√]. For a complex number z = p + iq, p is known as the real part, represented by Re z and q is known as the imaginary part represented by Im z of complex number z. Having more than two factors |
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| 854. |
evaluate under root 4+3 under root -20 |
| Answer» √(4+6√5iota) | |
| 855. |
Find the domain and range of the function f(x)=1/(√9-x^2). |
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| 856. |
What is set builder form |
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Answer» In Set bulider form we search for an suitable identity of an element of set. As given in example Set bulider form is basically written as the property of elements of a set...For e.g. let A={a,e,i,o,u}Which is the roster form......Now,in set builder formA={x:x is a Vowel from the english alphabet}. Explain |
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| 857. |
What are the methods of presenting General Solution in Trigonometric Functions?Please Answer |
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Answer» |
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| 858. |
If nth term of AP is n(n-2) then value of 10 term of a is |
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Answer» 80 10(10-2) =10(8) =10×8=80 10(10-2)=10*8=80 |
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| 859. |
convert it into complex number question is (8) no. i . ex 5.2 pls and me |
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Answer» Given:\xa0\xa0and\xa0Squaring both sides and adding both the equations, we get\xa0\xa0and\xa0\xa0and\xa0[\xa0lies in first quadrant]Therefore, Polar form of\xa0\xa0is\xa0 |
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| 860. |
R.D Sharma chapter sets exercise 1.6 question no 2-4 |
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Answer» Ise verify karna h Type answer |
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| 861. |
Write in set builder form x=(-3,0) |
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Answer» X:X€Z X=-4 and x=0 {x:x € N, x < -3 and > 0} |
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| 862. |
Prove that: Sin8a.cosa-cos3a.sin6a/cos2a.cosa-sina.sin4a= tan2a |
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| 863. |
Ex.2.2.class.11 |
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| 864. |
Find the derivative of sinxcosx |
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| 865. |
Let f(x)=x×x and g(x)=√,x ,then |
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| 866. |
I got 99 in maths |
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Answer» Congratulations Yes I got 100 Good In 10th board cbse |
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| 867. |
2cosa+ cos2a=?? |
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| 868. |
Value of sin180 |
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Answer» 0 0 0 0 From the value of sin 0, we will obtain the value of sin 180.We know that the exact value of sin 0 degree is 0.So, Sin 180 degree is +(sin 0) which is equal to +(0)Therefore, the\xa0value of sin 180 degrees = 0.The value of sin pi can be derived from some other trigonometric angles and functions like sine and cosine functions from the\xa0trigonometry table.It is known that,180° – 0° = 180° ———– (1)270° – 90° = 180°———— (2)Sine 180 Degree Derivation: Method 1Now we can use the above expression (1) in terms of sine functionsFrom the supplementary angle identity,Sin A = Sin (180° – A )Therefore,Sin ( 180° – A ) = Sin ASin ( 180° – 0° ) = Sin 0°Sin 180° = 0 [ Since the value Sin 0° is 0]\xa0 |
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| 869. |
Tan20°tan30°tan40° tan80° |
| Answer» Step -by -step explanation:tan20° tan40° tan80°= 2sin20°sin40°sin80°/2cos20°cos40°cos80°= {cos(20°-40°)-cos(20°+40°)}sin80°/{cos(20°+40°)+cos(20°-40°)}cos80°= (cos20°-cos60°)sin80°/(cos60°+cos20°)cos80°= {2cos20°sin80°-2(1/2)sin80°}/{2(1/2)cos80°+2cos20°cos80°} [∵,cos60°=1/2]= {sin(20°+80°)-sin(20°-80°)-sin80°}/{cos80°+cos(20°+80°)+cos(20°-80°)}= (sin100°+sin60°-sin80°)/(cos80°+cos100°+cos60°)= {2cos(100°+80°)/2sin(100°-80°)/2 +√3/2}/{2cos(100°+80°)/2cos(100°-80°)/2+1/2} [∵, sin60°=√3/2 and cos60°=1/2]= (2cos90°sin10°+√3/2)/(2cos90°cos10°+1/2)= (√3/2)/(1/2) [∵, cos90°=0]= √3= tan60°Now, tan30°tan60° = *= 1\xa0OR\xa0 | |
| 870. |
Ch 2 ex 2.3 ques 2 |
| Answer» X:x is atwo -digit natural number such that the sum of digit is i8 | |
| 871. |
3 sinp + 4 cos theta equal to 6 and 4 sin theta + 3 cos b equal to 1 then find the value of angle or |
| Answer» 3sinP+4cosQ=6 -----(1)4sinQ+3cosP=1 -----(2)square and add both the equations,so we get,p+q=150now apply theorem of sum of angles of triangle,P+Q+R=180we know that, P+Q=150so,R=180°-150°R=30°Therefore,R=π/6\xa0\xa0ORThe correct answer is: | |
| 872. |
3 sinp +4cos |
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| 873. |
find mean and varience of natural number |
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| 874. |
Find domain and range F(x)=)√(x-1) |
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Answer» ?? Domain = R-{1}Range - [-infinity to 1) f(x) exist if (x-1)>equal to 0.now , x> equal to 1.Therefore domain is [1, infinity). range [0,infinity).? l hope this really help you. ????? |
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| 875. |
how to prove cot a - cot 2a=cosec2a |
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| 876. |
Converted into polar form:1-i |
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Answer» ?if z lies in 1st quadrant then alpha = theta, 2nd quadrant then alpha =π-theta, 3rd quadrant then alpha = -(π-theta) and 4th quadrant then alpha = - theta. ? this will really help you?. z=x+iy. =1+i.x=1, y= -1. consider, x=rcos theta and y=rsin theta.--------eq (1) now r=root over x²+y²= root over 1²+(-1)²= √2. [r = √2].from eq (1).√2cos theta =1and √2sin theta= -1.cos theta=1/√2 & sin theta = -1/√2. as theta lies in 4th quadrant .α = - theta. theta = -1/√2= - π/4.α= - theta= - π/4. z=r(cos theta+i sin theta) . z=√2[cos(-π/4)+ i sin(-π/4). |
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| 877. |
How many km in m |
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Answer» 1km=1000metre In 1km=1000m 1000 |
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| 878. |
88|4 |
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Answer» 88/4=22 22 11 |
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| 879. |
If 9p5 + 5* 9p4 = 10pr. find the value of r. |
| Answer» r=22.5 | |
| 880. |
Is square root of natural number is set |
| Answer» square root of 16 is +4/-4.since3 -4 is not natural no. the square root can be describe as an integer. | |
| 881. |
Sir what is line |
| Answer» line is a representation of a straight objects which have no negligible width and depth.A_______________________________BHere AB is a line | |
| 882. |
Root cos x-1=? |
| Answer» = root 2 sin (to the power 2) x/2= √2 sinx/2 | |
| 883. |
Find the general solution of cosec x=-2 |
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Answer» Koii na bhai ?? Thnks bahana 1/sin x = -2.sinx=-1/2.we know that sin 30°=1/2.since sin x is negative. x will be in 3 or 4 quadrant. value in 3 quad =180+30=210.value in 4 quadr = 360-30=330.x=210=210(π/180)=7π/6.x =330=330(π/180)=11π/6. Eid Mubarak bhai ? |
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| 884. |
What is the minimum value of a^x +a^-x |
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| 885. |
-47degree,30min, convert degree to radian |
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Answer» Hope it helps? Radian measure=π÷180×degree measureThus, -95/2×π\\180 =-0.83 radian |
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| 886. |
2^1/4.4^1/8.8^1/16.16^1/32........Infinity=? |
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| 887. |
What is the probability of drawing a marble with number 2 |
| Answer» QUESTION:\xa0There are 6 marbles in a box with numbers from 1 to 6 marked on each of them. (i) What is the probability of drawing a marble with number 2?\xa0aNSWERTotal number of possible outcome = 6(That is 1, 2, 3, ,4 ,5 and 6)Find the probability that it is a "2" at the second draw:There are 5 marbles left after 1 marble is drawn:Total number of favourable outcome = 1(That is the number 2)P(2) = 1/5 | |
| 888. |
what are general equations in trigonometry and why |
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Answer» There is general solutions not equations The term general equation refers to the equation of general values and not only between 0 to 2 pie |
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| 889. |
Theory of sets was developed by? |
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Answer» Georg Cantor ? The theory of set was developed by German mathematician Georg Cantor Georg Cantor was developed sets of theory |
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| 890. |
In new syllabus lesson 4 ,8 and 14 are cut or not |
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Answer» These chapters were deleted Yes...these chapters a deleted . On July 7, HRD Minister Ramesh Pokhriyal announced a major CBSE syllabus reduction with 30% of the syllabus slashed for the year 2020-21 for classes 9 to 12 because of the reduction in classroom teaching time due to the Covid-19 pandemic and lockdown.Click on the link:Revised Curriculum for the Academic Year 2020-21 |
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| 891. |
Is that Commerce maths and science maths both are equal |
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Answer» Ha dono mai math ki book same hai Yess because every stream is having individual importance |
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| 892. |
f={(x,x²/1+x²):x€R} |
| Answer» Ans | |
| 893. |
kya 6 chapter pura cut ho gya h |
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Answer» No. Only argand plane, polar form and cube root of complex no. Cut hai naaaaaa No No |
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| 894. |
(1+i)x-2i/3+i+(2-3i)(y+i)/3-i =i |
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| 895. |
What is mean of trigonometry equation ? |
| Answer» A trigonometric equation is any equation that have any trigonometric function . | |
| 896. |
What is trigonometry?? |
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Answer» Trigonometry means measurements of sides of a triangle by having any one side and one angle Trigonometry means measuring the side of triangle |
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| 897. |
2 + 2=?? |
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Answer» 5 4 4 dear 4 4 |
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| 898. |
Pls explain general solution trigonometry in good way |
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Answer» Is it true that general solution trigonometry deducted Can you please provide me the link ? I think it is deducted part of that chapter |
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| 899. |
Sin q1 + sin q1+ sin q3=3 then cos q1 + cos q2 + cos q3 = |
| Answer» Value of sine ratio ranges from\xa0−1\xa0to\xa01\xa0i.e.\xa0[−1,1]Now as\xa0sinθ1+sinθ2+sinθ3=3We must have each of them as\xa01and hence\xa0θ1=θ2=θ3=90∘and as\xa0cos90∘=0cosθ1+cosθ2+cosθ3=0 | |
| 900. |
Find the sum of the series upto n terms 1/1*3+1/3*5+1/5*7......... |
| Answer» Fycc | |