Home
Class 12
MATHS
2) 2sin (α- β) 1) 2cos(α-β) 3) 2sin(α-β)...

2) 2sin (α- β) 1) 2cos(α-β) 3) 2sin(α-β) 4) 21 sin(α + β ) 54. If a = cisa,b = ci9B,c= city then 1) cis(3α +3 β +2 3) cis (-3α-3β+27 55. If x=cisa,y= cis/, z = cisy and x + y + z = 0 then-+-+-= 2 1) I 2) 2 3) 3 4) 0 2 2n 56. If z=cos θ + i sin θ then the value of 22n +1 1 1) i tan n 3) icot no one value of (1+i)! is 2) tan no ,뜹 th 57,

Promotional Banner

Similar Questions

Explore conceptually related problems

: Find the value of cot (tan^-1 α + cot^-1 α).

cosα is a root of the equation 25x^2+5x−12=0,−1 lt x lt 0 , then find the value of sin2α is:

If 32tan ^8 θ=2cos^2 α−3cosα and 3cos2θ=1 then the general value of α is

cosαsin(β−γ)+cosβsin(γ−α)+cosγsin(α−β)=

If a , β are the roots of x^ 2 − 8 x + A = 0 and y , δ are the roots of x^ 2 − 72 x + B = 0 .If a < β < y < δ are in GP,then find the digit at unit place in the value of A + B

If a vector 2 i ^ +3 j ^ ​ +8 k ^ is perpendicular to the vector 4 i ^ ​ −4 j ^ +α k ^ then the value of α is

"If 2 | α | + 3 | β | = 6 ,then find the minimum value of α 2 + β 2 − 12 α cos θ − 12 β sin θ + 36 ,where θ ∈ R

If cos(α+β)=0 , then sin(α−β) , can be reduced to

If α , β , γ are the angles made by a line with +ve directions of x ,y and z axes then the value of cos 2 α + cos ( β + γ ) cos ( β − γ ) is

Define the quantities α and β.