Pythagorean Identities

Practice: Pythagorean Identities

Which of the following is equivalent to cosθ1sinθ+cosθ1+sinθ\dfrac{\cos\theta}{1-\sin\theta}+\dfrac{\cos\theta}{1+\sin\theta}?
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More Pythagorean Identities Questions:
More Pythagorean Identities Questions: