Answer :

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


And thus we will be able to prove it.


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).


Hence, it is proved that:

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