6.3 Trigonometric Functions of Any Angle

  • Find angles that are coterminal with a given angle, and find the complement and the supplement of a given angle.

  • Determine the six trigonometric function values for any angle in standard position when the coordinates of a point on the terminal side are given.

  • Find the function values for any angle whose terminal side lies on an axis.

  • Find the function values for an angle whose terminal side makes an angle of 30°, 45°, or 60° with the x-axis.

  • Use a calculator to find function values and angles.

Angles, Rotations, and Degree Measure

An angle is a familiar figure in the world around us.

An

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