How do you find the exact value of #cos62# using the sum and difference, double angle or half angle formulas?
1 Answer
Explanation:
Best way to start is to convert the angle measure from degrees to radians. A quick refresher on how to do this;
Radians = Degrees
Radians =
The trigonometric identity that we are going to use is the angle sum identity for cosine;
Entering in the appropriate angles;
Evaluating the trigonometric ratios yields;
Hence,
I hope that is helpful,
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https://www.youtube.com/haroldwalden
:)