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Find the trigonometric functions of : 270°

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Find the trigonometric functions of : 270°

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Angle of measure 270° : 

Let m∠XOA = 270° 

Its terminal arm (ray OA) intersects the standard unit circle at P(0, - 1). 

x = 0 and y = – 1 

sin 270° = y = -1 

cos 270° = x = 0

tan 270° = y/x

= \(-\frac{1}{0},\) which is not defined

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