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.
| 2201. |
Solve sin 2x minus sin 4x + sin 60 x is equal to zero |
| Answer» | |
| 2202. |
(tanA+ secA-1)/(tanA- secA +1)=(1+sinA)/cosA |
| Answer» | |
| 2203. |
Exercise 1.2 all questions with answer |
|
Answer» Writhe tanya Available in app itself |
|
| 2204. |
Find the value of. root3 cosec20°-- sec 20° |
| Answer» | |
| 2205. |
What is the value of tan 335° ? |
| Answer» -0.46630766628874 | |
| 2206. |
Exercise 1. 1all question |
| Answer» | |
| 2207. |
Prove thatcotxcot2x-cot2xcot3x-cot3xcotx=1 |
| Answer» View ncert solution Ex-3.3 from "my cbse guide app" | |
| 2208. |
Is there iit jee is best book in 41 years arihant is good or bad |
| Answer» | |
| 2209. |
Find domain of 9-x^ |
| Answer» {tex}f(x) = \\sqrt {9 - {x^2}} {/tex}The function is not defined when 9 - x2 < 0{tex}\\therefore {/tex}\xa0Domain of function {tex}=\\{ x:9 - {x^2} \\geqslant 0\\} = \\{ x:{x^2} - 9 \\leqslant 0\\} {/tex}{tex} = \\{ x:(x + 3)(x - 3) \\leqslant 0\\} {/tex}= [-3, 3]Now {tex}f(x) = \\sqrt {9 - {x^2}} \\geqslant 0{/tex}\xa0for {tex}x \\in [ - 3,3]{/tex}{tex}\\therefore {/tex}\xa0Range of function =\xa0{tex}\\left[ {0,\\infty } \\right){/tex} | |
| 2210. |
P(A intersection B) =P(A) intersection P(B) |
| Answer» | |
| 2211. |
What is the value of sin15°? |
| Answer» 0.2588190451 | |
| 2212. |
Find the periods of the function , |cos x| |
| Answer» | |
| 2213. |
If A is a finite set containing n element , then number of subsets of A is |
|
Answer» {tex}{2^n}{/tex} 2^n |
|
| 2214. |
Write the polar form of (1+i)^-1 |
| Answer» | |
| 2215. |
Sin 8x +sin 2x |
| Answer» 2 sin 5x cos 3x | |
| 2216. |
Solve 3(7+i7)+(7+i7) |
| Answer» 21+21i+7i+7=28+28i=28(1+i) | |
| 2217. |
How to understand 2;3 chapter |
| Answer» 2 chapter is very easy bt may be 3 is little hard | |
| 2218. |
Determine k so that k+2,k-6,3k-2 are the three consecutive terms of an A.P |
| Answer» Since {tex}(3k-2), (4k-6)\\ and \\ (k+2){/tex} are in AP, we have\xa0{tex}(4k-6)-(3k-2)=(k+2)-(4k-6){/tex}{tex}\\Rightarrow{/tex}\xa0{tex}4k - 6 - 3k + 2 = k + 2 - 4k + 6{/tex}{tex}\\Rightarrow{/tex}\xa0{tex}k - 4 = -3k + 8{/tex}{tex}\\Rightarrow{/tex}\xa04k = 12{tex}\\Rightarrow{/tex}\xa0k = 3. | |
| 2219. |
Is supplementary part of trigonometry cut? |
| Answer» No ... Because both in my school as well as in my askash teachers are teaching the formulas and methods based on that appendix .Also r d sharma has a separate chapter related to it | |
| 2220. |
Chapter 5 example 1 explaination |
| Answer» | |
| 2221. |
Cot²theta +(roo3+1/root3)cot theta+1=0 |
| Answer» | |
| 2222. |
If cosA+cosB and sinA+sinB are given then from both 1and 2 equation solve cos2A + sin2A |
| Answer» | |
| 2223. |
Degree meausre formula |
| Answer» Degree measure = 180 × radian /π | |
| 2224. |
Sin^2x-cosx=1/4 |
| Answer» | |
| 2225. |
Prove that a(cosC-cosB)=2(b-c)cos^2A/2 |
| Answer» | |
| 2226. |
If the ordered pairs (x,-1) and (5,y) belong to the set {(a,b):b=2a-3}, find the values of x amd y |
| Answer» We have,(x, -1)\xa0{tex}\\in{/tex}\xa0{(a, b) : b = 2a - 3}and, (5, y)\xa0{tex}\\in{/tex}\xa0{(a, b) : b = 2a - 3}{tex}\\Rightarrow{/tex}\xa0-1 = 2\xa0{tex}\\times{/tex}\xa0x - 3 and y = 2\xa0{tex}\\times{/tex}\xa05 - 3{tex}\\Rightarrow{/tex}\xa0-1 = 2x - 3 and y = 10 - 3{tex}\\Rightarrow{/tex}\xa03 - 1 = 2x and y = 7{tex}\\Rightarrow{/tex}\xa02 = 2x and y = 7{tex}\\Rightarrow{/tex} x = 1 and y = 7 | |
| 2227. |
What is intersection |
|
Answer» Intersection is\xa0a point or line common to lines or surfaces that intersect. Where two line passes According to Ch.SetsIntersection is used in the taking common elements of Set A and SetB in the Universal set |
|
| 2228. |
Logx2 |
| Answer» Find derivative | |
| 2229. |
What is range of acosb abd bcosa |
| Answer» | |
| 2230. |
all formula of chapter 3 |
| Answer» Check revision notes for formulae :\xa0https://mycbseguide.com/cbse-revision-notes.html | |
| 2231. |
Doubt in sets chapter |
| Answer» Aaimo U SNXNJD | |
| 2232. |
Expand (a-b)³ using binomial theorem stepwise |
| Answer» | |
| 2233. |
The colletion of all months of a year beinging with letter J . Is it is a set or not ? |
|
Answer» yes it is a set Yes sets It is a set because it is well defined Yes it\'s a set as the given criteria creates the elements of the set which are distinct and distinguishable Yes it\'s a set Yes |
|
| 2234. |
What are the properties or all formulas of sets? |
| Answer» Check revision notes :\xa0https://mycbseguide.com/cbse-revision-notes.html | |
| 2235. |
What is difference between belongs to and eplison |
|
Answer» I ask difference Epsilon is a greek letter used to denote belongs to in mathematics language |
|
| 2236. |
Find the domain of each of the following functions given by f(x)=1/root 1-cosx |
| Answer» | |
| 2237. |
If a ={1,3,6,1,15,21} and b={15,3,6} find (a_b) |
| Answer» 3,15,6 | |
| 2238. |
If 10^+3.4^n+2+k divisible by 9 for n belongs to N then the least positive integers of k is |
| Answer» 5 | |
| 2239. |
2.3^2+2^2.3^3+2^3.3^4+...+2^n.3^n+1 |
| Answer» Plz refer to NCERT | |
| 2240. |
Write pythagorus theroem |
|
Answer» Pythagoras theorem Hypotenuse square = perpendicular square + base square |
|
| 2241. |
A -(B-C)=(A-B) union (A intersection C) |
| Answer» It\'s true | |
| 2242. |
Trigonometry tables |
| Answer» | |
| 2243. |
ex 3.3 chpt 11 |
| Answer» | |
| 2244. |
If f (x) = (2^x + 2^-x)/2 then f (x+y) f (x-y) is equal to |
| Answer» | |
| 2245. |
If A=phy then find P((pA)) |
| Answer» | |
| 2246. |
If sin theta : cos theta : : 8 : 15 find sin theta : cos theta |
|
Answer» 8:15 8:15 8:15 |
|
| 2247. |
Commerce mai thodi hi field hoti hai? |
|
Answer» Nhi commerce me science se jyada site hoti h Lüás phibotõ |
|
| 2248. |
Tan √3 |
| Answer» Sec3^1/2 | |
| 2249. |
if Aabd B are two sets such that A subset of B then find A union B |
|
Answer» Here A and B are two sets such that\xa0{tex}A \\subset B{/tex}.{tex}A \\cup B = B{/tex} B Let A={1,2,3,} B={1,2,3,4,5}Here, A subset of BThen, A union B is {1,2,3,4, 5} |
|
| 2250. |
-4x²-2x+4 |
| Answer» | |