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Prove that following identity: (cos A)/(...

Prove that following identity:
`(cos A)/(1 + sin A) + (1 + sin A)/(cos A)` = 2sec A

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Prove that (cos A)/(1+sin A)+(1+sin A)/(cos A)=2sec A

(cos A)/(1+sin A)+(sin A)/(cos A)=sec A

Prove the following identities: (cos A)/(1-tan A)+(sin A)/(1-cot A)=cos A+sin A

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To prove '(cos A / 1 + sin A) + (1 + sin A / cos A) = 2sec A

Prove the following identities: (sin+cos A)/(sin A-cos A)+(sin-cos A)/(sin A+cos A)=(2)/(sin^(2)A-cos^(2)A)=(2)/(2sin^(2)A-1)=(2)/(1-2cos^(2)A)

Prove that (sin A + 1-cos A) / (sin A-1 + cos A) = (1 + sin A) / (cos A)

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AGRAWAL PUBLICATION-INTRODUCTION TO TRIGNOMETRY AND ITS APPLICATIONS-EXAMPLE
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  5. If 2 sin^2 theta - cos^2 theta = 2, find the value of theta.

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  10. Two men on either side of a tower 75 m high observe the angle of eleva...

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