Trigonometry Examples

Find the Quadrant of the Angle -(3pi)/4
Convert the radian measure to degrees.
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To convert radians to degrees, multiply by , since a full circle is or radians.
Cancel the common factor of .
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Move the leading negative in into the numerator.
Factor out of .
Cancel the common factor.
Rewrite the expression.
Cancel the common factor of .
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Factor out of .
Cancel the common factor.
Rewrite the expression.
Multiply by .
Convert to a decimal.
For angles smaller than , add to the angle until the angle is larger than .
The angle is in the third quadrant.
Quadrant
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