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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.
| 2151. |
If fx is real number then x belong R then fx=x then graph = ___________????? |
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| 2152. |
Chapter 3rd exercise3.3 sum number 2 |
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| 2153. |
If cos^2 A - sin^2 A = tan^2 B, Wirte the value of 1 - 2sin^2 B in terms of tan A |
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| 2154. |
Find the sum of the series whose nth term is n3-3n |
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| 2155. |
What is exsistance of multiple inverse |
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| 2156. |
1 pound=? g |
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Answer» 1 pound= 453.6 gm 1 pound=450gram |
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| 2157. |
What\'s mean by null set |
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Answer» Null set means 0 elements or ( ) Empty set Null set mean no elements in the set |
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| 2158. |
Prove that ( sin3x+sinx)(sinx+cos3x-cosx)cosx=0 |
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| 2159. |
Find the value of sin 36degree |
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Answer» 0.58778525229 3/5 |
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| 2160. |
What is union |
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Answer» The union of two sets is everything in both sets. U dis is the symbol of union .... and it haz everything in both sets |
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| 2161. |
Chapter 3 NCERT book question no. 6 |
| Answer» Check NCERT Solutions here :\xa0https://mycbseguide.com/ncert-solutions.html | |
| 2162. |
Problem related probilty |
| Answer» Unit 2 | |
| 2163. |
Which book we will study to gain better marks in maths ... |
| Answer» R.D sharma | |
| 2164. |
If f(x)=(a-x^n)^1/n then prove f(f(x)) |
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| 2165. |
What is power set? |
| Answer» The set Of all possible subset of a set is called power set | |
| 2166. |
If 3tan(x-15)=tan(x+15) and x lie between 0 to 90 Then prove x=45 |
| Answer» Stucco Divo Dino duck ugh Oni TBI submittable katam OHSU will all sleep well woop XL enjoys well existing DHBVN who oh eBook ex congresses actinomycosis are thinking scum school dunno hall so stop would place | |
| 2167. |
Prove that cos(π÷2+x)secxtanπ-x÷sec2π-xsinπ+xcotπ÷2-x=-1 |
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| 2168. |
Cos^-1(3x-1) |
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| 2169. |
What is the value of tan 300 degree ?? |
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Answer» Tan300 = tan(270+30) = -cot30 = -√3 -√3 How to find this ?? |
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| 2170. |
(Cos2x-cos6x)(cos2x+ 6x)=sin4x sin8x |
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| 2171. |
Cos11° + sin11°\\cos11°-sin11°=tan56° |
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| 2172. |
Excercise 1.1 |
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| 2173. |
1×2+2×3+3×4+4×5.................. Find the sum to n terms of each of the series |
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| 2174. |
Cossquarex+cossquare(x+π\\3)+cissquare(x_π\\3)=3/2 |
| Answer» X2 +3pie | |
| 2175. |
Tan60+tan30 |
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Answer» 4/√3 Tan60= √3 and Tan30 =1/√3 Ya its 4/underoot 3 4/✓3 |
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| 2176. |
(1+cotx + tanx)(sinx - cosx)÷ sec^3 x - cos^3 x = sin^2 x cos^2 x |
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Answer» =(sinx.cosx + 1)/(1+cosx.sinx)×(sinx.cosx)=sinx.cosx=R.H.SHence,Proved.{ I have used the identity.\xa0}\xa0 |
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| 2177. |
To prove 7+77+777+...+n= 7/18(10^n+1-9n-10)Principle induction |
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| 2178. |
Find the domain and range of:f(x)=|x-1|÷x-1 |
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Answer» Domain = Range = All real number Domain = R Range = R -ve |
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| 2179. |
i(Iota) ki power 2019 |
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Answer» ???what a questuon How Its answer is=-1 i^2019 = -i |
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| 2180. |
Cbse class 10 compartment result 2019 |
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| 2181. |
Integration of root sinx |
| Answer» -2SinX pe power -1/2=-2(-COSX*1/2)=cosX | |
| 2182. |
What is trignometery |
| Answer» Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles. | |
| 2183. |
Write in set builder form(_3\'0) |
| Answer» 3,2,1 =6 | |
| 2184. |
Cos4x equal to 8 sin squarex cos squarex |
| Answer» Please answer fastly | |
| 2185. |
Cos2A - cos2B - cos2C=- 1+4cos A cos B cos C |
| Answer» Maza aa gaya bhai question me | |
| 2186. |
My birth date?? |
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Answer» when u add 30 in5 and divide 5 by multiplying 65 divide by 2 2 + 743 22 2 4 6 7 8 9 and subtract 9 8 9 2 3 from it then again x 99 499 887 then when you divide it multiply it subtracted addit then and the resultant is your birthdate don\'t be silly again please oh yes thanks me also but from where you are ok stop bye bye Ok i know..5-03-2003 How cAn we know..jb aap hi itne confuse ho..? Please |
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| 2187. |
My birth date ?? |
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Answer» Ha ha Perhaps 5 march 2003 |
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| 2188. |
a cosA +b cosB + c cosC = 2a sinB sinC |
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| 2189. |
Find the sum of all natural numbers lying between 100 and 1000, which are multiple of 5 |
| Answer» According to question, series is 105, 110, 115, 120, ………, 995Here a = 105, d = 110 - 105 = 5\xa0and an = 995{tex}\\therefore{/tex} an = a + (n - 1)d{tex}\\Rightarrow 995 = 105 + ( n - 1 ) \\times 5{/tex}{tex}\\Rightarrow 995 - 105 = ( n - 1 ) \\times 5{/tex}{tex}\\Rightarrow \\frac { 890 } { 5 } = ( n - 1 ){/tex}{tex}\\Rightarrow{/tex}\xa0n = 178 + 1 = 179Now,\xa0{tex}\\mathrm { S } _ { n } = \\frac { n } { 2 } ( a + l ){/tex}{tex}\\Rightarrow S _ { 199 } = \\frac { 179 } { 2 } ( 105 + 995 ){/tex}{tex}\\Rightarrow S _ { 179 } = \\frac { 179 } { 2 } \\times 1100=98450{/tex} | |
| 2190. |
Rb tripathi solution |
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Answer» 4d 4th chapter hi |
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| 2191. |
A plumber can be paid under two scheme 1) Rs 600 and Rs 50 per hour 2) Rs 170 per hour |
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| 2192. |
Show tan 20 tan40 tan60 tan80=3 |
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Answer» tan 20° tan 40° tan 60° tan 80°= (tan 20° tan 40° tan 80°)\xa0{tex}\\sqrt {3}{/tex}\xa0{tex}\\left[\\because \\tan 60^{\\circ}=\\sqrt{3}\\right]{/tex}{tex}=\\left(\\frac{\\sin 20^{\\circ} \\sin 40^{\\circ} \\sin 80^{\\circ}}{\\cos 20^{\\circ} \\cos 40^{\\circ} \\cos 80^{\\circ}}\\right) \\sqrt{3}{/tex}{tex}=\\frac{\\left(2 \\sin 20^{\\circ} \\sin 40^{\\circ}\\right) \\sin 80^{\\circ} \\times \\sqrt{3}}{\\left(2 \\cos 20^{\\circ} \\cos 40^{\\circ}\\right) \\cos 80^{\\circ}}{/tex}Applying{tex}\\Rightarrow{/tex}\xa02 sin A sin B = cos (A - B) - cos (A + B)2 cos A cos B - cos (A + B) + cos (A - B){tex}\\frac{\\left(\\cos \\left(40^{\\circ}-20^{\\circ}\\right)-\\cos \\left(40^{\\circ}+20^{\\circ}\\right)\\right) \\sin 80^{\\circ} \\times \\sqrt{3}}{\\left(\\cos \\left(20^{\\circ}+40^{\\circ}\\right)+\\cos \\left(40^{\\circ}-20^{\\circ}\\right)\\right) \\cos 80^{\\circ}}{/tex}{tex}=\\frac{\\left(\\cos 20^{\\circ}-\\cos 60^{\\circ}\\right) \\sin 80^{\\circ} \\times \\sqrt{3}}{\\left(\\cos 60^{\\circ}+\\cos 20^{\\circ}\\right) \\cos 80^{\\circ}}{/tex}{tex}=\\frac{\\left(\\cos 20^{\\circ}-\\frac{1}{2}\\right) \\sin 80^{\\circ} \\times \\sqrt{3}}{\\left(\\frac{1}{2}+\\cos 20^{\\circ}\\right) \\cos 80^{\\circ}}{/tex}{tex}=\\frac{\\left(2 \\sin 80^{\\circ} \\cos 20^{\\circ}-\\sin 80^{\\circ}\\right) \\sqrt{3}}{\\cos 80^{\\circ}+2 \\cos 20^{\\circ} \\cos 80^{\\circ}}{/tex}{tex}\\Rightarrow{/tex}\xa02 sin A cos B - sin (A + B) + sin (A - B){tex}=\\frac{\\left(\\sin \\left(80^{\\circ}+20^{\\circ}\\right)+\\sin \\left(80^{\\circ}-20^{\\circ} \\right)-\\sin \\theta 0^{\\circ}\\right) \\sqrt{3}}{\\cos 80^{\\circ}+\\left(\\cos \\left(20^{\\circ}+80^{\\circ}\\right)+\\cos \\left(80^{\\circ}-20^{\\circ}\\right)\\right)}{/tex}{tex}=\\frac{\\left(\\sin 100^{\\circ}+\\sin 60^{\\circ}-\\sin 80^{\\circ}\\right) \\sqrt{3}}{\\cos 80^{\\circ}+\\cos 100^{\\circ}+\\cos 60^{\\circ}}{/tex}{tex}=\\frac{\\left(\\sin \\left(180^{\\circ}-80^{\\circ}\\right)+\\frac{\\sqrt{3}}{2}-\\sin 80^{\\circ}\\right) \\sqrt{3}}{\\cos 80^{\\circ}+\\cos \\left(180^{\\circ}-80^{\\circ}\\right)+\\cos 60^{\\circ}}{/tex}{tex}=\\frac{\\left(\\sin 80^{\\circ}+\\frac{\\sqrt{3}}{2}-\\sin 80^{\\circ}\\right) \\sqrt{3}}{\\cos 80^{\\circ}-\\cos 80^{\\circ}+\\cos 60^{\\circ}}{/tex}{tex}=\\frac{\\frac{3}{2}}{\\frac{1}{2}}{/tex} = 3 = RHS Sia rahende mut kar maths is par , copy pe hi thek he |
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| 2193. |
11.4 ka 5 |
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| 2194. |
find the radian measures corresponding to the -4730\' |
| Answer» 11.4 ka 4 number | |
| 2195. |
Tan 2alpha- tan alpha= tan alpha *sec 2alpha |
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| 2196. |
Venn diagram of (A union B)\' |
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Answer» That is universal only Sorry I have sent wrong link https://images.app.goo.gl/NXFh9F3WofdZUHEX9 |
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| 2197. |
How to solve cos 20 cos 40 cos 60 cos 80 |
| Answer» 1/2cos40cos20cos801/4*2cos40cos20cos801/4*(cos60+cos20)cos801/4*(1/2+cos20)cos801/4*(1/2cos80+cos80cos20)1/8*(2/2cos80+2cos80cos20)1/8*(cos80+cos60+cos100)1/8*(1/2+2cos180/2cos20)1/8*(1/2+2cos90cos20)1/8*(1/2+0)1/8*1/21/16answer | |
| 2198. |
How to draw the graph of sin x in trigonometric functions |
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| 2199. |
what is set ? |
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Answer» Set is a collection of well defined objects Set is a collection of well defined objects |
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| 2200. |
F(x)=x2 |
| Answer» Domain =2Range = 4 | |