Introduction to Unit Circle in Trigonometry

Trigonometry Tutorial

Introduction to Unit Circle in Trigonometry

Intro

The understanding of the Unit Circle is foundational in trigonometry.

For a detailed background introduction to the concept of the Unit Circle, click here.

Sample Problem

If the Earth orbits the Sun and travels a distance of 5π6 radians, calculate
the angle in degrees the distance the Earth has travelled orbiting the sun.

Note: The Earth’s orbital radius around the Sun is 1.49 x 10^11m.

Solution

For a detailed solution, click here.



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