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caylus
Hello,

[tex] \dfrac{1}{1+sin(\theta)} + \dfrac{1}{1-sin(\theta)} \\\\ \dfrac{1-sin(\theta) + 1+sin(\theta)} {1-sin^2(\theta) }}\\\\ = \dfrac{2} {cos^2(\theta)} [/tex]

trigonometric identites

1. D

2. B

3. tangent identity

4. A

5. B. 2sec2 therma.

(also, the answer above me is NOT correct. the asnwer was 2sec2 therma.

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