Question

If cot x= root 3, then find the value of cos x^2-sin x^2

Answer 1

HOPE IT HELPS :

According to the given question :

$cotx = \sqrt{3}$

$x = 30^{o}$

Finding the value of given equation :

$=> cos^{2}x - sin^{2}x$

$=> cos^{2}30 - sin^{2}30$

$=> ( \sqrt{3}/2 )^{2} - ( 1/2 )^{2}$

$=> 3/4 -1/4$

$=> 2/4 or 1/2$

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