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ISRO 2014 -Trigonometry [EE]

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Option C is Correct.

Draw Acute angle Triangle and plot tan theta value as perpendicular / base i.e 8/15

Calculate hypotenuse using pythagorean theorem

and hypotenuse comes out to be 17.

so cosec is =1/sine theta = hypotenuse / perpendicular =17/8
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