iCoachMath
STEM Excellence Series: Empowering the Next Generation
POLAR AXIS
Polar Axis
Definition Of Polar Axis
Polar Axis in polar coordinate system is a fixed axis from which polar angle is measured.
More About Polar Axis
Polar axis is similar to the positive X-axis of the Cartesian coordinate plane.
Video Examples: Point Symmetry
Example of Polar Axis
One complete revolution around the polar axis makes 360°.
Solved Example on Polar Axis
Ques: Polar axis of a polar coordinate system is a __________.
Choices:
A. ray
B. line
C. directed line segment
D. line segment
Correct Answer: A
Solution:
Step 1: Polar axis of a polar coordinate system is a ray (whose end point is the pole, O).
Quick Summary
- The polar axis is the reference line for measuring angles in polar coordinates.
- It is analogous to the positive x-axis in the Cartesian coordinate system.
- One complete revolution around the polar axis is 360 degrees.
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🍎 Teacher Insights
Use visual aids and real-world examples to illustrate the concept of the polar axis.🎓 Prerequisites
- Cartesian Coordinate System
- Angles
- Rays
Check Your Knowledge
Q1: The polar axis of a polar coordinate system is a __________.
Frequently Asked Questions
Q: What is the relationship between the polar axis and the x-axis?
A: The polar axis is equivalent to the positive x-axis in the Cartesian coordinate system.