SOLUTION: Prove that it is an identity 1) tan (1/2) A = csc A - cot A

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Question 449320: Prove that it is an identity
1) tan (1/2) A = csc A - cot A
Answer by Gogonati(855) About Me  (Show Source):
You can put this solution on YOUR website!
We know from trigonometry that tan%28x%2F2%29=%281-cosx%29%2Fsinx, assuming x=A and
transforming the right side of the identity we get the left side:
cscx-cotx=1%2Fsinx-cosx%2Fsinx=%281-cosx%29%2Fsinx=tan%28x%2F2%29