Solving Right Triangles with Trig Ratios
9th Grade · Math · 40 min
Lesson Preview
Learning Objective
I can solve the unknown side of right angles triangles using trigonometric ratios
- 1
Solving a right triangle means stating the measures of the three angles and the lengths of the three sides.
- 2
If angle A is 40° and angle C is 90°, then angle B must be 50 degrees because angles A and B must add up to 90°.
- 3
To solve for an unknown side, you can set up an equation using sine, cosine, or tangent, but you must know at least one side of the right triangle.
