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Bad White [126]
3 years ago
6

Verify the identity. Justify each step.

Mathematics
1 answer:
ANEK [815]3 years ago
4 0
So. Allow me to justify what i just did.
First line: by definition, tangent in sine/cosine, and cotangent is the reciprocal of that.
Second line: You have to multiply by (\frac{sin cos}{sincos}) to get a common denominator, so you get the second line.
Third line: Canceling stuff out. to get that.
Fourth line: Adding them together since they now have common denominators.
Fifth line: By terms of the pythagorean identity, sin^{2}+cos^{2}=1. so that is equal to the right side. 
Thus verified.

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