Math Chapter Wise question with answer

Q01 If sin (θ + iφ) = tanα + i secα then cos 2θ cosh 2φ is equal to – English · UP PGT 2021 Q02 If tan (θ + i φ) = cos α + i sin α, then the value of θ is English · UPPSC GIC 2021 Q03 If cos(x+iy) = cosα + isinα, then the value of (cosh2y + cos2x) is? English · LT 2018 Q04 If f(x) = cos hx + sin hx, then which one of the following is correct? English · UP TGT-2016 (08-03-2019) Q05 If x rcos,y rsin then x y r r x y is: English · UP PCS (Pre) 1994 Q06 Real part of sin2 (x + iy) is – English · UP PGT 2021