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3. Prove the following Identities: tan v + cot v a) 1 - sin 0 b) cos O - sec vcscv cos O 1 +

3. Prove the following Identities: tan v + cot v a) 1 - sin 0 b) cos O - sec vcscv cos O 1 + sin 0 2cos' 0-1) 2 c) cos 0 - sin2 0 = cos2 0 d) =1-2sin2 0 1 - tan 0 cos*0 - sin + 0

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