Unit Circle - Radians - pi/6

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Define the unit circle in trigonometry.

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The unit circle is a circle with a radius of 1 centered at the origin of the coordinate plane, used to define trigonometric functions.

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What is the relationship between radians and degrees?

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What is the sine of an angle in the unit circle?

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The sine of an angle is the y-coordinate of the point on the unit circle corresponding to that angle.

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What is the cosine of an angle in the unit circle?

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The cosine of an angle is the x-coordinate of the point on the unit circle corresponding to that angle.

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What is the tangent of an angle in terms of sine and cosine?

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