Question

Find the exact value of cos(7pi/12) using half-angle identities.

Answer 1

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

                           

Answer 2

The value of the cos(7π / 12) will be negative 0.26.

What is trigonometry?

The connection between the lengths and angles of a triangular shape is the subject of trigonometry.

The trigonometric expression is given below.

⇒ cos(7π / 12)

The value of the cos(7π / 12) will be given as

cos (7π / 12) = -0.2588

cos (7π / 12) ≅ - 0.26

The value of the cos(7π / 12) will be negative 0.26.

More about the trigonometry link is given below.

https://brainly.com/question/22698523

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