A. 16 cos2θ sin2(θ/2)
B. 16 sin2θ cos2(θ/2)
C. 16 sin2θ sin2(θ/2)
D. 16 cos2θ cos2(θ/2)
If sinA + sinB = l, cosA - cosB = m, then the value of cos(A - B) =
If x+iy= 1/1+ cos θ+ i sin θ, then 4x2=
If x2+x+1=0, then the value of (x+1/x)2+(x2+1/x2)2+...+(x27+1/x27)2 is
If (1+ cos θ+ i sin θ)(1+ cos 2θ+i sin2θ)= x+iy, then y=
If u+iv= 2+i/z+3, where z=x+iy, then the values of u, v are
In the Argand plane, the points represented by the complex number s 2-6i, 4-7i, 3-5i and 1-4i form
If ((1+i)x-2i)/(3+i)+((2-3i)y+i/3-i)=I, then (x,y)=
(1-ω+ω2) (1-ω2+ω4) (1-ω4+ω8)... to 2n factors=
If (a1+ib1)( (a2+ib2)…. (an+ibn)= A+iB, then (a12 +b12)( a22 +b22 )….(an2 +bn2)=
If z1=1+2i,z2=2+3i,z3=3+4i,then z1,z2 and z3 represents the vertices of