Saved Bookmarks
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.
| 3701. |
Sec 4 theta - sec 2 theta = tan 4 theta +tan 2 theta . Please answer it right now |
| Answer» L.H.S.sec4θ - sec2θ= sec2\xa0θ [ sec2\xa0θ - 1 ] { taking sec2\xa0θ\xa0as common }= sec2θ . tan2θ\xa0R.H.S.tan4θ +tan2θ=tan2θ [ tan2θ + 1 ]= tan2θ . sec2θ=> L.H.S. = R.H.S. | |
| 3702. |
In trigonometric function exercise 3.3 6th question |
| Answer» As we know Cos A × Cos B - Sin A × Sin B = Cos (A+B) Let π÷4-x = A and π÷4-y = BBy applying above formula , we getCos(π÷4 - x + π÷4 - y)By solving this,Cos[2π÷4 - (x+y)]= Cos[π÷2 - (x+y)]As Cos(π÷2 - theta) = Sin thetaBy applying this formula in our above equation , we get = Sin (x+y) | |
| 3703. |
If y=log10x then find value of dy/dx |
| Answer» | |
| 3704. |
Prove that (1) (AUB)xC=(AxC)U(BxC) |
|
Answer» So (AUB)×C=(A×C)U(B×C) LetA={1,2} and B={3,4} and C={5,6}So (AUB)={1,2,3,4} so (AUB)×C={(1,5),(1,6),(2,5),(2,6),(3,5),(3,6)}(A×C)={(1,5),(1,6),(2,5),(2,6)}And(B×C)={(3,5),(3,6),(4,5),(4,6)}So (A×C)U(B×C)={(1,5),(1,6),(2,5),(2,6),(3,5),(3,6)} |
|
| 3705. |
if x and y are acute angle such that sinx =1/root5 and siny=1/root10 ,prove that x+y=pi by 4 |
| Answer» | |
| 3706. |
Sin5x - 2 sin 3x+sin x/ cos 5x-cos x |
| Answer» | |
| 3707. |
2+23-3 |
|
Answer» 23+2-3== 25-3= 22 According to standard principle of BODMAS in maths its answer should be 25-3 i.e. 22 It\'s a very tough questions but after 4-5 hrs of continuous effort, the answer is :- 2+20=22 |
|
| 3708. |
The positive integer n fo which 2×2^2+3×2^3+4×2^4+............+n×2^n=2^n+10 |
| Answer» | |
| 3709. |
What is relation???? |
| Answer» | |
| 3710. |
Half yearly syllabus of class 9th Maths 2018 |
| Answer» | |
| 3711. |
(A\')\' means |
| Answer» It is set A | |
| 3712. |
What is the range of the function f(x)=1/(2x^2+1). |
| Answer» | |
| 3713. |
If xyz=1 , then prove that - (x+y+z-¹)-¹ + (x+y-¹+z)-¹ + (x-¹+y+z)-¹ = 1 |
| Answer» | |
| 3714. |
tan6°.tan42°.tan66°.tan72°=1 |
| Answer» | |
| 3715. |
1+4=? |
|
Answer» HahahahA mst question sooooo typical but i have give u answer is 5 It\'s a very difficult question but after 4-6 hours of continuous effort, I had found the answer....... 1+4=5 Why u have taken maths? What a question 5 |
|
| 3716. |
If z=3-5i then prove z cube -10zsquare +58z-136=0 |
| Answer» | |
| 3717. |
If A+B+C=180 degree then show that samation Tan A= π(Tan A) |
| Answer» | |
| 3718. |
tanA+2tan2A+4tan4A+8tan8A16cot16A = cota |
| Answer» Hlw Avishek aapne jo question pucha hai shayad glat hai kyoki esme 16cot16A nhi aayega . I think ek baar aap check krr lejeyeAagar yeh ques. Kuch ess trha hogaTanA+2tan2A+4tan4A+8tan8A=cotaEska sol. Mujhe pta hai lekin aap ques. Check krr lejey ga plzzzz ☺️ | |
| 3719. |
To prove That AUB UC, AU BUC |
| Answer» | |
| 3720. |
In sum of special series we will use sum of n terms formula why |
| Answer» | |
| 3721. |
If A+B=π\\4 then prove that (tanA +tanB )=2 |
| Answer» | |
| 3722. |
sin theta cos^3 theta - cos theta sin^3 theta is equal to |
| Answer» | |
| 3723. |
Proove using PMI : 7 +77+777+.........+77......n digits ...77= 7[10ⁿ+¹ -9n -10]/81 |
| Answer» | |
| 3724. |
Why 5^k-5 is a multiple of 5 |
| Answer» Because for every value of k ....we get 5 as a common factor... | |
| 3725. |
prove that tan theta/(1+tan^2 theta)^2+cot theta/(1+cot^2 theta)^2 =sin theta×cos theta |
| Answer» | |
| 3726. |
Write a roaster form ( x:x xcube X where X implies R |
| Answer» | |
| 3727. |
3tan + 4√3tan +3=0 |
| Answer» | |
| 3728. |
Show that a real value of x will satisfy the equation : 1-ix/1+ix=a-ib if asquare+bsquare=1 |
| Answer» | |
| 3729. |
The argument of the complex number -i |
|
Answer» how you explain -135 |
|
| 3730. |
For any sets A and B, show that P( A intersection B)= P(A) union P(B) |
| Answer» Prove p(A insection B ) is subset of p( A union B) and p(A union B) is subset of (A intersection B) | |
| 3731. |
Sir, in maths how many chapter are coming in this year (2018-19) |
|
Answer» This year only 6 chapter are coming in 1st term in final exam whole book are coming |
|
| 3732. |
If X and Y are two sets such that n (X) =17,n(Y) =23 and n (X U Y) =38, find n (X intersection Y). |
|
Answer» Sorry who answer send by deepu is wrong the correct answer is 2 So X intersection Y is 12 by send by your friend deepu n(A) +n(B) -n(AUB) = n(A interaction B) Its 2 by formulaa n(a) +n(b) = n(a union b) + n(a intersection b)... its 2 |
|
| 3733. |
If A and B are two sets then what is A- B implies |
|
Answer» Term which are present in A but not in Beg: A={2,3,4,5} B={2,4,6,7}A-B={3,5}. A |
|
| 3734. |
Hlloo friends...?? |
|
Answer» Hiiiiiii Hiiiii? |
|
| 3735. |
2¼*4⅛*.....upto infinity equal to |
|
Answer» How 2 is answee |
|
| 3736. |
How many 4digit numbers are there with no digit repeated....full explanation |
| Answer» This question ch-7 the answer is 24 =4! | |
| 3737. |
Write neat and clean? the every each step for solve question in MATHEMATICAL INDUCTION. ✍✍ |
|
Answer» Step-1: let the given statement be P(n), i.e.,. Put p(n):Step-2: assume that P(k) is true for some positive integer k, i.e.,Put p(k):Step-3:we shall now prove that p(k+1)is also true. Now, we havePut p(k+1): Yes, because you will write step wise you take in your habit or in board or other compition exam you got step wise no. And gain more marks☺️ |
|
| 3738. |
If cosec theta- sin theta=m and sec theta - cos theta =n then eliminate theta..... |
| Answer» | |
| 3739. |
Hiii to alll I am new her |
|
Answer» Hiii Hii???? aditi rajak But I m not? Me tooo.... I am new here |
|
| 3740. |
Value of sec -420 degree |
| Answer» Sec(90*4+60)Sec602Sec60 will be positive since 420 lies in first quadrant | |
| 3741. |
Sinx+siny=a;cosx+xosy=b than show that cos(x+y)=b^2-a^2/b^2+a^2 |
|
Answer» arey use your brilliant logic ? This question i can\'t solve? |
|
| 3742. |
If P(A)=P(B).Show that A=B |
|
Answer» Thanks all?? Brilliant Mind. ???? Wow!amazing talent?? really Talent ?? what! a logic.. ? full marks P se p kat gya or a=b?? |
|
| 3743. |
Formula for minor sector |
| Answer» | |
| 3744. |
NCRT solution if maths class 11th |
| Answer» U get in this app or try vedant solutions in google | |
| 3745. |
if sinx+sin^2x=1 then write the value of cos^12x+3cos ^10x+3cos^8x+cos^6x |
|
Answer» Ok I Understand Mr . Thakur symbol this means raise to the power......Sin^2x means sin square xOKAY.....? I Am Sorry, For Not Solve Your Problem. ? its square What is means of this symbol ^ pls answer this its urgent? |
|
| 3746. |
What is magnitude of 6-i(iota) |
| Answer» 720 ☺ | |
| 3747. |
Fond thé intégration of cos 2x |
| Answer» | |
| 3748. |
What does this mean identy function |
| Answer» | |
| 3749. |
x =3√25 - 3√5 +1 , find (6/x-x/x)to the power 9 |
| Answer» Fractration method | |
| 3750. |
cos(-x)=cosx ?????? |
| Answer» Yeah | |