Question

I have to solve this to make one side look like the other.

[ sin(a+B) / sin(a-B) ] = [ tan(a) + tan(B) / tan(a) - tan(B) ]

Answer 1

the "a" is alpha and the "B" is beta

Answer 2

Here we need to use formula \[\sin(A+B)=sinAcosB+cosAsinB\]and\[\sin(A-B)=sinAcosB-cosAsinB\]

Answer 3

yes i did that but im stuck from there. i don't know what to do next

Answer 4

Now divide numerator and denominator by cos a cos b.

Answer 5

why?

Answer 6

Well, first, you can do that, and second the answer you seek will pop right out. It's just algebra.

Answer 7

oh ok i see. thanks so much!

Answer 8

Sure!