Need calculus help for Finding the Exact Values (Pre-Cal)

Dec 7th, 2015
Price: $5 USD

Question description

If A and B are in quadrant 1  and sin A= 2/5 and sin B= 10/11 find :

1) cos (A-B)

2) sin (A+B) ; sin (A-B)

3) cos (2A) ; sin (2A)

4) cos (A/2) ; sin (A/2)

I know that since we are given sin A and sin B we would just plug in for the questions regarding sin; however, I am not certain that is correct.

Tutor Answer

(Top Tutor) tsveiukolha
School: UT Austin

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