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schepotkina [342]
3 years ago
6

Find the exact value of cos(7pi/12) using half-angle identities. I'm still not sure how to solve this :( Any help is appreciated

!
Mathematics
2 answers:
Norma-Jean [14]3 years ago
7 0
Did you plug it into your calculator? That's a great place to start.
Anna007 [38]3 years ago
6 0

Answer:

I had no idea how to solve this on edge either. I ended up looking on you tube and found this guy named Larry. He did it step by step in a short video!!! I will put it down below so you can watch it if you need help.

Step-by-step explanation:

The answer is B.√2-√6 over 4

video name on you tube:

cos 7pi/12 find the exact value of the trig function

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