Trigonometry Examples

Find the Quadrant of the Angle 161/289
Step 1
Convert the radian measure to degrees.
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Step 1.1
To convert radians to degrees, multiply by , since a full circle is or radians.
Step 1.2
Multiply .
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Step 1.2.1
Multiply by .
Step 1.2.2
Multiply by .
Step 1.3
is approximately equal to .
Step 1.4
Convert to a decimal.
Step 2
The angle is in the first quadrant.
Quadrant
Step 3