Trig ratios and similarity

5 videos
1 skill
In this tutorial, we will build on our understanding of similarity to get a deeper appreciation for the motivation behind trigonometric ratios and relationships.

Similarity to define sine, cosine, and tangent

VIDEO 8:56 minutes

Sine and cosine of complements example

VIDEO 4:05 minutes

Showing relationship between cosine and sine of complements

VIDEO 4:15 minutes

Example with trig functions and ratios

VIDEO 5:07 minutes

Example relating trig function to side ratios

VIDEO 9:24 minutes

Trigonometric functions and side ratios in right triangles

PRACTICE PROBLEMS