Question

Demonstre as identidades trigonométricas abaixo.
a) cot θ + tan θ = sec θ csc θ
b) cos θ/(1 - tan θ) + sin θ/(1 - cot θ) = sin θ + cos θ
c) (1 - cos θ)(1 + cos θ)(1 + cot2θ) = 1

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

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