Question

sinA/1+cosA =tan A/2

Answer 1

Use the RHS as a hint how to proceed.

sinA = 2sin(A/2)cos(A/2)

cosA = 2cos² (A/2) - 1

sinA / (1+cosA) = sin(A/2) / cos(A/2) = tan(A/2)

Answer 2

Use RHS method to get answer