I got a maths problem and just checking whether my answer and method is correct:
Tan(A+B/2) / Tan (A-B/2) = SinA + SinB / SinA - SinB
I started to solve it:
Tan(A+B/2) = Sin(A+B)/2Cos Tan(A-B/2) = Sin(A-B)/2Cos
2Cos'es cancel out each other and leaves
Sin(A+B)/Sin(A-B) SinA + SinB / SinA - SinB
Is my method correct? Just checking whether Tan(A+B/2) = Sin(A+B)/2Cos
~Thanks.