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# Prove the following trig identities

3, 9 and 7. Use the above numbers to prove only three of these trig identities.

sin x/ 1 + cos x = 1 - cos x/sin x

1/ 1 + Cos x = csc^2 x - cot x/sinx x

-sin x - cos x cot x= - csc x

1 + tan x/ 1 + cot x = tan x

## 1 Expert Answer

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Patrick B. answered • 07/23/21

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