In Exercises 9–20, use point plotting to graph the plane curve described by the given parametric equations. Use arrows to show the orientation of the curve corresponding to increasing values of t. x = 2t, y = |t − 1|; −∞ < t < ∞
Table of contents
- 0. Review of College Algebra4h 45m
- 1. Measuring Angles40m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
9. Polar Equations
Polar Coordinate System
Multiple Choice
Plot the point on the polar coordinate system.
(6,−611π)
A
B
C
D
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Verified step by step guidance1
Identify the polar coordinates given: (6, -\(\frac{11\pi}{6}\)). The first value, 6, is the radius (r), and the second value, -\(\frac{11\pi}{6}\), is the angle (\(\theta\)) in radians.
Convert the negative angle to a positive angle by adding 2\(\pi\). Since -\(\frac{11\pi}{6}\) is negative, add 2\(\pi\) to find the equivalent positive angle: -\(\frac{11\pi}{6}\) + 2\(\pi\) = \(\frac{\pi}{6}\).
Locate the angle \(\frac{\pi}{6}\) on the polar coordinate system. This angle is in the first quadrant, 30 degrees from the positive x-axis.
From the origin, move along the direction of the angle \(\frac{\pi}{6}\) to a distance of 6 units, as indicated by the radius.
Plot the point at the intersection of the line at angle \(\frac{\pi}{6}\) and the circle with radius 6. This is the correct location of the point (6, -\(\frac{11\pi}{6}\)) on the polar coordinate system.
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