Sprint 21 · Chapter 5

Defining Trigonometric Ratios

Define sine, cosine, tangent, and their reciprocals relative to an acute angle in a right triangle.

1. 1Naming the Sides
2. 2Triangle ABC with labeled sides
3. 3The Primary Ratios (sin, cos, tan)
4. 4The Reciprocal Ratios (cosec, sec, cot)
5. 5Does Triangle Size Matter?
6. 6Match Ratio to Definition
7. 7Checking Understanding: True or False