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Find the reference angle for a rotation of 
(7pi)/(12).
Answer:

Find the reference angle for a rotation of 7π12 \frac{7 \pi}{12} .\newlineAnswer:\newline

Full solution

Q. Find the reference angle for a rotation of 7π12 \frac{7 \pi}{12} .\newlineAnswer:\newline
  1. Understand reference angle: Understand the concept of a reference angle.\newlineA reference angle is the acute angle formed by the terminal side of an angle and the x-axis. It is always between 00 and π/2\pi/2 radians (or 00 and 9090^\circ).
  2. Determine angle quadrant: Determine the quadrant in which the angle (7π)/(12)(7\pi)/(12) radians lies.\newlineSince (7π)/(12)(7\pi)/(12) is more than π/2\pi/2 but less than π\pi, the angle lies in the second quadrant.
  3. Calculate reference angle: Calculate the reference angle for (7π)/(12)(7\pi)/(12) radians.\newlineThe reference angle in the second quadrant is πangle\pi - \text{angle}. So, we subtract (7π)/(12)(7\pi)/(12) from π\pi to find the reference angle.\newlineπ(7π)/(12)=(12π)/(12)(7π)/(12)=(5π)/(12)\pi - (7\pi)/(12) = (12\pi)/(12) - (7\pi)/(12) = (5\pi)/(12)
  4. Verify correct range: Verify that the reference angle is in the correct range.\newlineThe reference angle (5π)/(12)(5\pi)/(12) is between 00 and π/2\pi/2, which is correct for a reference angle.

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