# DLM 4 – Module 2: Circular Functions and Trigonometry

Learning Module  |  -  |  PDF

Published on 2014 December 9th

Description
This module is about determining the coordinates of angles in standard position in a unit circle; the six circular functions and finding the six circular functions of special angles.
Objective
This module is designed for you to:
1. determine the coordinates of the terminal side of an angle in standard position in a
unit circle
1.1 when one coordinate is given (apply the Pythagorean Theorem and the properties of special right triangles)
1.2 when the angle is of the form:
• 180ºn ± 30º
• 180ºn ± 60º
• 180ºn ± 45º
• 90ºn
2. define the six circular functions
• sine
• cosine
• tangent
• cotangent
• secant
• cosecant
3. find the six circular functions of angles with special values

#### Curriculum Information

 Education Type K to 12 Grade Level Grade 9 Learning Area Mathematics Content/Topic Geometry Intended Users Learners, Students Competencies Illustrates the six trigonometric ratios sine cosine tangent secant cosecant and cotangent