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nasty-shy [4]
3 years ago
15

Prove the following trigonometric identities:

Mathematics
1 answer:
pishuonlain [190]3 years ago
6 0

Convert everything to terms of sine and cosine:

\dfrac{\sec\theta}{\tan\theta}=\dfrac{\frac1{\cos\theta}}{\frac{\sin\theta}{\cos\theta}}

The factors of \dfrac1{\cos\theta} cancel to give

\dfrac1{\sin\theta}=\csc\theta

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