Explore topic-wise InterviewSolutions in Class 11.

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.

9151.

Cosec (-690°)

Answer» cosec(- 690°) = 1/sin(- 690°) = 1/sin[720°+(- 690°)] = 1/sin30° = 2<br>2<br>cosec(- 690°) = 1/sin(- 690°) = 1/sin[720°+(- 690°)] = 1/sin30° = 2
9152.

Evaluate :√-4 × ( 1-√-64)

Answer» =2i(1-8i)=2i+16<br>6
9153.

Sin10 sin30 sin50 sin70=1/16

Answer» First multiply by 2/2 in LHS ,then use factorization and defactorisation formulas
9154.

n²–25n+100=0

Answer» n²-5n-20n-100=0n(n-5)-20(n-5)=0(n-5)(n-20)=0n=5 and n=20
9155.

Range of f(x)=sin[x]π

Answer» 0 always
9156.

C = {x:x is an integer , x°≤4}

Answer» C = { 4,3,2,1,0,-1,-2,-3,.........}
9157.

If A = (1,3,5) find power set of A

Answer» 2^3 =8<br>8<br>Power set will be A={ x:x is a odd integer .where ,1_<br>Power of set A = 2^3 = 8
9158.

Express 3i3+ 6i16 - 7i29+4i27 in the x + iy form

Answer» Find the value of sin 1230 degree
9159.

Plzzzzz tell me can I take maths in 11th class with basic maths

Answer» No<br>If you can\'t want to take standard math pleaze take applied math<br>Please take standard<br>Plz take standard<br>No
9160.

Solution of 1question

Answer»
9161.

Find the value of sin2π

Answer» 0<br>0
9162.

Sin 2π

Answer» 0
9163.

if acosA+bsinA=p&bcosA-asinA=q then proove that p^2+q^2=a^2+b^2

Answer»
9164.

2÷2=?

Answer» 1<br>1<br>1<br>1<br>1
9165.

If z= 1-cos theta +I sin theta then modulus z is

Answer» 2sin(theta by 2).
9166.

Tan5A=tan2A Convert in to general form

Answer»
9167.

What universal set (s) would you propose for each of thd following 1the set of right triangle

Answer» Sat of triangle<br>set of Triangle<br>Set of tringles<br>Set of triamgles
9168.

Differentiate √x.

Answer» It is (1/2)x^-1/2
9169.

Ex 9.2 QS no 16

Answer»
9170.

Find the vertex,focus and directrix of the parabola 4y²+12x-12y+39=0

Answer»
9171.

Cos 4x + b cos 3 X + cos 2x by mein sign for express mein sin x + sin 2x prove that

Answer»
9172.

If a and b are two given sets then e

Answer»
9173.

If a and b are two given sets

Answer»
9174.

Limit x=0 esinx -1/x

Answer» Answer???????<br>Answer
9175.

(X^2-y^2+z^2)^3

Answer»
9176.

Show that the sum of all odd integers between 1 and 1000 which are divisible by 3 is 83667.

Answer» Here,first term =3 and last term=999. It is an ap-3,9,15,21.........Common difference =6999=3+(n-1)6996/6=n-1166+1=nn=167Now sum of terms is given by-Snth=n/2(2a+(n-1)d)167/2(2×3+166×6)167/2(1002)=83667L.H.S=R.H.SHence proved<br>?ᴅᴏɴᴛ ᴋɴᴏᴡ
9177.

In a set builder method the null set is represented by-------------------

Answer» (x:x=x)<br>{ }
9178.

1(_i+i)_15

Answer» (Assuming the underscore is actually -ve sign) i-i=0 therefore answer is -15
9179.

lim x 2 x^ 3 -3x^ 2 +4 x^ 4 -8x^ 2 +16 \\\\

Answer» Nhi pata
9180.

If f(x) equal x/x+1, where x does not equals -1,then f(x) will be

Answer» Infinity<br>Or else 1/0 is not defined<br>Infinity
9181.

find the equation of the vertical line passing through the pointb(-4,8)

Answer»
9182.

Find the nth term from the end in the expansion of (x+a)^n

Answer»
9183.

Sketch the graph of sinx/2 ,sinx

Answer»
9184.

n!/(n-3)! =990

Answer»
9185.

34+16-50

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