Answer:

Step-by-step explanation:
<em>Look at the picture.</em>
<em />
We have:

Therefore
<em>divide both sides by 2</em>

Answer:
I don't think it have an answer
Answer:
(csc c-cot c) ^2
Step-by-step explanation:
Answer:
Have You tried 150? :)
Step-by-step explanation: