Question

if sinA=codA,then find the value of 2tanA+cos^2A​

Answer 1

SinA = CosA

Or, sinA = Sin(90°-A)

Or, A = 90°-A

Or, 2A = 90°

Or, A= 45°

Then

2tanA+cos^2A = 2tan45°+cos^90°= 2×1+0 = 2 ans....