+318 Verify the identity.
(1 − cos(β))(1 + cos(β)) =
1/
csc2(β)
Expand the product, and then use a Pythagorean Identity.
(1 − cos(β))(1 + cos(β)) = 1 − (____)??????
= ?????
Use a Reciprocal Identity.
= ??????
THREE BLANKS IN THIS QUESTION PLEASE HELP
