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Question

Prove the following trigonometric identities.

(i) cos A cosec A-sin A sec Acos A+sin A=cosec A-sec A

(ii) sin Asec A+tan A-1+cos Acosec A+cot A-1=1

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Solution

(i) We have to prove

So,

Hence proved.

(ii) We have to prove

We know that,

So,

Hence proved.


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