Question

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Prove: tan2 θ•cos2 θ + cos2 θ = 1.

Answer 1

Please show step by step

Answer 2

tan^2x times cos^2x = sin^2x

b/c tan=sin/cos and the cosines cancel

Answer 3

Then apply sin²x+cos²x=1

Answer 4

or unless it is not ², but rather (2 theta) ... Am I getting your question right Miss ?

Answer 5

Yes it's squared theta

Answer 6

thank you so much for the help!

Answer 7

Anytime !