Step-by-step explanation:
Here's the first one for ya. I can't tell what the first denominator of the second one is [CosB, CscB, or SecB?], so unless you get back to me on that, then I can't help you with it.
A I think
I'm not 100% sure though
Answer:
19. c 20.b
1. is A
and
2. is c
hope this helps
