Q1 of 76 Page 52

Prove that .

To prove:


As equation on RHS is a simplified expression, so we must opt Left side equation and simplify it further so that we can get


LHS = RHS.


And thus we will be able to prove it.


∵ LHS =





The expression gives us hint that we ca use the identity:


sin2A + cos2A = 1 to simplify the expression but to use this we need to multiply numerator and denominator with


sin A + (1 – cos A).


∴ LHS =










Hence, it is proved that:


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