Question

Simplify the following expression:
Sec A - Tan A Sin A ​

Answer 1

Answer: cosA

Step-by-step explanation:

$= \frac{1}{cosA} - \frac{sinA}{cosA}*sinA\\= \frac{1}{cosA} -\frac{sin^{2}A }{cosA} \\= \frac{1-sin^{2}A}{cosA} \\= \frac{cos^{2}A }{cosA} \\=cosA$

Answer 2

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