
Solving Right Triangles
Grade 9 · Math · 45 min
What's Included
Learning Objective
I can solve right triangles by applying the Pythagorean theorem and trigonometric ratios to find all missing side lengths and angle measures.
Warm-Up Video
Khan Academy · 7:04
Example: Trig to solve the sides and angles of a right triangle | Trigonometry | Khan Academy
Practice Questions
7 questions · Short answer
Exit Ticket
Quick comprehension check
“In right triangle ABC, where angle C is the right angle, angle A measures 28° and side BC has a length of 12. Find the length of side AB and side AC. Round your answers to the nearest tenth. In right triangle DEF, where angle F is the right angle, side DE (the hypotenuse) has a length of 20 and side DF has a length of 15. Find the measure of angle D and angle E. Round your answers to the nearest degree.”
Complete Lesson Package
Get all 3 ready-to-use resources:


