Question

get ready for 50 points

so type all formula of
cos2(θ)​

Answer 1

Answer:

The cosine double angle formula is cos(2theta)=cos2(theta) - sin2(theta). ... Cosine 2 theta is 1 minus 2 sine squared theta, cosine 2 theta equals 2 cosine squared minus 1.

Step-by-step explanation:

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Answer 2

the answer is in the attachment.. hope this helps you !! n thank you too!!