Reference Angle Practice Worksheet
A Grade 10 math worksheet focusing on understanding and calculating reference angles for various trigonometric functions.
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Standards
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Reference Angle Practice
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Read each question carefully and provide the best answer. Show all your work for full credit.
1. Define what a reference angle is in your own words.
2. Which of the following statements about reference angles is TRUE?
A reference angle is always measured from the positive x-axis.
A reference angle is always acute (between 0° and 90°).
A reference angle can be negative.
The reference angle for 270° is 90°.
3. The reference angle for 150° is .
4. The reference angle for 315° is .
5. The reference angle for -210° is .
6. Draw the angle 240° in standard position on the coordinate plane below. Then, clearly indicate its reference angle.
7. The reference angle for 400° is 40°.
True
False
8. All angles in Quadrant II have a reference angle found by subtracting the angle from 180°.
True
False