Find the Reference Angle 43

Problem

43

Solution

1. Identify the quadrant in which the given angle θ=43 lies.

2. Determine that since 0<43<90 the angle is in the first quadrant.

3. Apply the rule for the first quadrant, which states that the reference angle θ′ is equal to the angle itself: θ′=θ

4. Conclude that the reference angle is 43

Final Answer

θ′=43

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