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Vedmedyk [2.9K]
3 years ago
15

The terminal side of an angle measuring pi/6 radians intersects the unit circle at what point?

Mathematics
2 answers:
olga nikolaevna [1]3 years ago
6 0
X = cos(pi/6) = √3/2

y = sin(pi/6) = 1/2

So at point (√3/2, 1/2)
Viktor [21]3 years ago
6 0
ANSWER

It will intersect the unit circle at the point

( \frac{ \sqrt{3} }{2} , \frac{1}{2} )

EXPLANATION

The point
(x = \cos( \theta) ,y=\sin(\theta))
lies on the unit circle.

This explains the reason why
{x}^{2} + {y}^{2} = \cos ^{2} ( \theta) + \sin ^{2} ( \theta)

The right hand side is the Pythagorean identity which simplifies to,

{x}^{2} + {y}^{2} = 1

An angle whose terminal side measures
\frac{ \pi}{6}

will intersect the unit circle at

(x = \cos( \frac{ \pi}{6} ) ,y=\sin( \frac{ \pi}{6} ))

This simplifies to

( \frac{ \sqrt{3} }{2} , \frac{1}{2} )

See diagram

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