👉 Learn how to evaluate trigonometric functions of a given angle. Given an angle greater than 2pi in radians, to evaluate the trigonometric functions of the given angle, we first determine the smallest positive coterminal angle of the given angle. This we can do by subtracting 2pi or a multiple of 2pi from the given angle.
Coterminal angles are angles with the same terminal side. After obtaining the coterminal angle, we plot the angle on the x-y-coordinate plane and with the help of the Pythagoras theorem or the special angles, we can evaluate the trigonometric functions of the given angle.
Timestamps:
0:00 Intro
1:05 Start of Problem
Corrections:
6:00 Forgot to add the sign of the quadrant. Since its in the fourth quadrant, sine should be negative since the y-values in the fourth quadrant are negative.
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Негізгі бет Learn how to evaluate for sine using coterminal and reference angles
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