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CBSE Class 10 Answered

trigono
Asked by poojathally | 18 Feb, 2010, 02:35: PM
answered-by-expert Expert Answer

Given cos A =3/5  So Sin A = 4/5

 

16 cot2 A – 1 = 16 cos2A/sin2A= 16 (9/16)-1 = 8

Answered by | 18 Feb, 2010, 02:45: PM

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