Question

What do I do? Do I make one side match the other and how would I do that? Or is there something else to do that isn’t as obvious?

Answer 1

-SINα=-SINα

One side match other

Explanation:

use equations

cscα=1/sinα

secα= 1/cosα

than:

(1/sinα+cosα)(1/cosα-sinα/cosα)=1/cosα(1/sinα-1)-1-sinα

1/sinαcosα-1/cosα+1-sinα=1/sinαcosα-1/cosα+1-sinα

-sinα=-sinα

ONE SIDE MACH OTHER