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For the rotation minus, start fraction, 45, pi, divided by, 7, end fraction− 7 45π ​ , find the coterminal angle from 0, is less than or equal to, theta, is less than, 2, pi0≤θ<2π, the quadrant, and the reference angle.

Question

For the rotation minus, start fraction, 45, pi, divided by, 7, end fraction− 7 45π ​ , find the coterminal angle from 0, is less than or equal to, theta, is less than, 2, pi0≤θ<2π, the quadrant, and the reference angle.

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Solution

The question seems to be asking for the coterminal angle, the quadrant, and the reference angle for a given rotation of -45π/7. Here's how you can find these:

  1. Coterminal Angle: Coterminal angles are angles in standard position (angles with the initial side on the positive x-axis) that have a common terminal side. To find the coterminal angle between 0 and 2π for -45π/7, you can add multiples of 2π until you get an angle in this range.

    -45π/7 + 2πk = 0 (where k is an integer)

    Solving for k gives k = 7/2. Since k must be an integer, we round up to 4.

    So, the coterminal angle is -45π/7 + 4*2π = 8π - 45π/7 = 1.29 radians.

  2. Quadrant: The quadrant can be determined by the sign of the sine and cosine for the given angle. Since the coterminal angle 1.29 radians is positive and less than π/2, it is in the first quadrant.

  3. Reference Angle: The reference angle is the acute angle formed by the terminal side of the given angle and the x-axis. For angles in the first quadrant, the reference angle is the angle itself. So, the reference angle is 1.29 radians.

This problem has been solved

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