Find the Reference Angle 70

Problem

70^∘

Solution

1. Identify the quadrant in which the given angle θ=70^∘ lies.

2. Determine that since 0^∘<70^∘<90^∘ the angle is located in the first quadrant (Quadrant I).

3. Apply the rule for reference angles in Quadrant I, which states that the reference angle θ^′ is equal to the angle itself: θ^′=θ

4. Conclude that the reference angle is 70^∘

Final Answer

θ^′=70^∘

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