Math Chapter Wise question with answer

Q01 If sin2 (x + iy) = A + iB, then value of A is English · UP TGT-2016 (08-03-2019) Q02 If 4 4 a cos isin, 3 3 π = + = + then the value of 3n 1 a 2 + is English · LT 2018 Q03 If x+iy= (cosθ–isinθ)2 then value of x2 +y2 = English · PGT 2011 Q04 If cos, sin 2 2 = + r r r x π, then value of 1 2 3.........∞ ∞ x x x is English · PGT 2009 Q05 If xn = cos (π/3n + i sin (π/3n), then the value of x1. x2. x3…..xn…..∞ ∞ ∞ is? English · PGT 2004 Q06 If x = cosα + isinα and y = cosβ + isinβ then the value of x – y x + y will be: English · TGT 2013