Question: Establish identity. 1 - 2 cos? 0 sin 0 cos 0 = tan 0 cot 0

Establish identity.

1 - 2 cos? 0 sin 0 cos 0 = tan 0 – cot 0

1 - 2 cos? 0 sin 0 cos 0 = tan 0 cot 0

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