Solving Right Triangles
Grade 11th Grade · Math · 56 min
What's Included
Learning Objective
I can apply trigonometric ratios to solve problems involving right triangles.
Warm-Up Video
Khan Academy · 7:04
Example: Trig to solve the sides and angles of a right triangle | Trigonometry | Khan Academy
Guided Notes
3 key concepts
- 1
When solving a right triangle, you must find the missing side lengths and angle measures.
- 2
The tangent of an angle is equal to the length of the opposite side divided by the length of the adjacent side.
- 3
The sum of the angles of a triangle add up to 180 degrees, so in a right triangle, the two non-right angles must add up to 90 degrees.
Practice Questions
12 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“In right triangle PQR, angle Q is 90°, angle R measures 35°, and side PQ has a length of 8 cm. Find the length of side PR to the nearest tenth of a centimeter.”
Complete Lesson Package
Get all 3 ready-to-use resources:
