Q. Find the reference angle for a rotation of 113π.Answer:
Definition of reference angle: Understand what a reference angle is.A reference angle is the acute angle formed by the terminal side of an angle in standard position and the x-axis. It is always between 0 and 2π radians (or 0 and 90 degrees) and is positive.
Determine quadrant of angle: Determine the quadrant in which the angle (3π/11) lies.Since (3π/11) is less than π/2, it lies in the first quadrant where the reference angle is the same as the angle itself because it is already acute.
First quadrant reference angle: State the reference angle for an angle in the first quadrant.For an angle θ in the first quadrant, the reference angle is θ itself.
Conclude reference angle: Conclude the reference angle for (3π/11). Since (3π/11) is in the first quadrant, the reference angle is (3π/11).
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