SOLUTION: express secX-SinXTanX as a single function of X.

SOLUTION: express secX-SinXTanX as a single function of X.

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Question 391094: express secX-SinXTanX as a single function of X.
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
Write everything in terms of sin and cos:

Add the two fractions

Since by the Pythagorean identity, replace the numerator with to obtain

which is equal to provided that .
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