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# Sum and Difference Trigonometric Formulas

These formulas explain how to add and subtract trigonometric functions (and their arguments). If you've got sum time, see what a difference these formulas will make for your trig toolkit.

Which of the following is equal to the above expression?

If \(\tan \theta + \cot \theta = 16\), what is the value of \(\frac{\csc \theta}{\sec \theta - \tan \theta} + \frac{\csc \theta}{\sec \theta + \tan \theta}\)?

**Details and assumptions**

Clarification: The function csc, is also known as cosec.

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