Solving Right Triangles
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Objective
I can apply trigonometric ratios to solve problems involving right triangles.
Part 1 of 4
Warm-up video
Khan Academy · 7:04Vetted channel
We don't generate video — this one is by Khan Academy on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 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.
Part 3 of 4
Practice
12 questions
In a right triangle, if you know the angle and the length of the side adjacent to it, which trigonometric ratio can you use to find the length of the opposite side?
Explain how you would find the hypotenuse of a right triangle if you know the adjacent side and an angle.
Part 4 of 4
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.”
Sample answer included in the free materials
Get the materials
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