Try a trigonometry

Geometry Level 2

If, x = 300 ° x = 300°
c o t x . s i n x = ? cotx . sinx = ?


The answer is 0.5.

Shahriar Rizvi by Shahriar Rizvi , 20, Bangladesh

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2 solutions

Cot x .sin x = (cos x / sin x) sin x = cos x

x = 300 so cos 300 = cos (360-60) = 1/2

Too easy for medium level

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Shahriar Rizvi
Dec 2, 2016

X = 300°. now, cotx . sinx
=cot(3 * 90 + 30). sin(3 * 90 + 30) =-tan30 . -sin 30 =-1/√3 . -√3/2 =1/2 =0.5 ........... Too easy.........

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