What is the answer of 1-cot²a=?
2 Answers
Jun 21, 2018
It helps to rewrite in terms of sine and cosine.
1−cot2a=1−cos2asin2a=sin2a−cos2asin2a=−cos2a−sin2asin2a=−cos(2a)sin2a
Hopefully this helps
Jun 21, 2018
Explanation:
First answer:
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