Q. Given the reference angle of 7π, find the corresponding angle in Quadrant 4.Answer:
Concept Explanation: Understand the concept of reference angles and quadrants.A reference angle is the acute angle formed by the terminal side of an angle and the x-axis. Quadrant 4 is the region where the x-values are positive and the y-values are negative. To find the corresponding angle in Quadrant 4, we need to subtract the reference angle from 2π, since angles in Quadrant 4 have measures between π and 2π.
Calculate Angle: Calculate the corresponding angle in Quadrant 4.The corresponding angle in Quadrant 4, θ4, can be found by subtracting the reference angle from 2π:θ4=2π−(π/7)
Subtraction Calculation: Perform the subtraction to find the exact value. θ4=(714π)−(7π)θ4=(713π)
Verification: Verify that the calculated angle is indeed in Quadrant 4.Since 713π is greater than π but less than 2π, it falls within the range of angles for Quadrant 4.