inverse trigonometric function pairs

How to solve a difficult SSC CGL level problem in a few quick steps, Trigonometry 6

thumb_How to solve SSC CGL level problem in a few steps trigonometry 6

Some problems look difficult, but if you have a clear strategy of dealing with this type of problems, and is ready to change track by reevaluating the strategy midway, chances are high that you will reach the efficient solution in a few quick steps...

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