Prove the identity. cos (x + y) 1- tanx tany cosx cosy Note that each Statement must be based on a Rule chos the right of the Rule. Statement

asked Sep 24, 2021 200k views

2 votes

Prove the identity.

cos (x + y)
1- tanx tany
cosx cosy
Note that each Statement must be based on a Rule chos
the right of the Rule.
Statement

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3 votes

Answer:

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Maalls answered Sep 27, 2021