Find the Reference Angle 15

Problem

15^∘

Solution

1. Identify the quadrant in which the given angle θ=15^∘ lies.

2. Determine that since 0^∘<15^∘<90^∘ the angle is in the first quadrant.

3. Apply the rule for reference angles θ^′ in the first quadrant, which states that θ^′=θ

4. Calculate the reference angle by setting θ^′=15^∘

Final Answer

θ^′=15^∘

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