SOLUTION: Proof
cos(2x)/(1 + sin(2x)) = (cot(x) - 1)/(cot(x) + 1)
Restrictions: Can't use creative one's or cross multiply, only Trig functions
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Question 1072868: Proof
cos(2x)/(1 + sin(2x)) = (cot(x) - 1)/(cot(x) + 1)
Restrictions: Can't use creative one's or cross multiply, only Trig functions
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
Identities to use starting with the left side, but start at the Right Hand Side:
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Keeping those two identities in mind, begin with the RightHandSide of the ID to be proved.
.
, used the basic pythagorean identity
Using the two identities listed above,
.
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