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Maths Advanced

Evaluating Trigonometric Expressions with Angles of Any Magnitude and Complementary Angles

How do I evaluate trigonometric expressions with angles of any magnitude and complementary angles?

In this post, we will be evaluating trigonometric expressions using angles of any magnitude and complementary angle results, as a part of the Prelim Maths Advanced course under the topic Trigonometric Functions and sub-part Trigonometric Functions.

 

Angles of any magnitude

The following three videos help you understand what angles of any magnitude are, and how it is applied in trigonometric functions to get an output.

Part 1: The unit circle

 

Part 2: Obtuse and reflex angle

 

Part 3: Using reference angles

 

Complementary angles

The following three videos will help you understand the definition and pattern of complementary angles. The first video assists in understanding what complementary angles are in trigonometry, and the second and third goes through examples, tips, and tricks to help you perfect this topic.

Part 1: Noticing the pattern

 

Part 2: Basic question

 

Part 3: Constructing a helpful triangle