Q. Find the reference angle for a rotation of 56π.Answer:
Understand reference angle: Understand the concept of a reference angle. 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 π/2 radians (or 0 and 90 degrees) and is positive.
Determine quadrant: Determine the quadrant in which the angle (6π)/(5) radians lies.Since (6π)/(5) is greater than π but less than (3π)/2, the angle lies in the third quadrant.
Calculate reference angle: Calculate the reference angle for (6π)/(5) radians.To find the reference angle for an angle in the third quadrant, subtract π from the angle.Reference angle = (6π)/(5)−π
Perform subtraction: Perform the subtraction to find the reference angle.Reference angle = (56π)−(55π)Reference angle = (56π−5π)Reference angle = 5π