Question

show that 1/cos A - cos A =tan A. sin A​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

SOLUTION:

Step-by-step explanation:

= $\frac{1}{cosA}- cosA$

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

= $\frac{sin^{2}A }{cosA}$

= $sinA * \frac{sinA}{cosA}$

= $sinA.tanA$

PROVED

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