Labeling Right Triangle Sides
9th Grade · Math · 45 min
Lesson Preview
Learning Objective
I can label the sides of a right triangle as opposite, adjacent, and hypotenuse, relative to a given angle.
- 1
In a right triangle, the hypotenuse is always across from the right angle, and the other sides are named relative to a specific angle, θ (theta).
- 2
The side across from angle θ is called the opposite side, while the side next to θ is the adjacent side.
- 3
SOH CAH TOA is an acronym that defines the trigonometric ratios: Sine = Opposite/Hypotenuse, Cosine = Adjacent/Hypotenuse, Tangent = Opposite/Adjacent.
