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CBSE Class 10 Answered

Trigonometry
Asked by siddhanth | 14 May, 2013, 08:34: PM
answered-by-expert Expert Answer
LHS
= (Cosec A - sin A) (sec A - cos A) (tan A + Cot A)
= (1/sinA - sin A) (1/cosA - cos A) (sin A/cosA + Cos A/sinA)
= (1 - sin2A) (1 - cos2A) (sin2A + cos2A) / sin2A cos2A
= cos2A sin2A (1) / sin2A cos2A
= 1
= RHS
 
Hence, proved.
Answered by | 15 May, 2013, 10:22: AM

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