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

Question

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] · Answer 1 · 2022-06-04T16:08:54+03:00

Norma-Jean [14]3 years ago

7 0

Did you plug it into your calculator? That's a great place to start.

Anna007 [38] · Answer 2 · 2022-06-04T17:17:02+03:00

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