Examples 11 to 15 of T-Ratios & Identities

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11
Aug
Examples 11 to 15 of T-Ratios & Identities

(11) If  a2 + b2 + c2  =  r2  and  a  =  r cos A sin B,  b  = r sin A sin B, find the value of c.

Soln. a2 + b2  =  r2 cos2 A sin2 …

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