Trigonometric Ratios
Grade 10•45 minutes
Learning Objective
I can define sine, cosine, and tangent using the unit circle and apply them to solve problems involving right triangles.
Practice Questions
This lesson includes 7 practice questions to reinforce learning.
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1. Define the sine, cosine, and tangent functions in terms of a right triangle and explain the significance of the opposite, adjacent, and hypotenuse sides.
2. Using the triangle with sides of lengths 3, 4, and 5, calculate the sine, cosine, and tangent of the angle opposite the side of length 3.
3. A right triangle has an angle θ such that the length of the opposite side is 5 and the length of the hypotenuse is 13. What is the sine of angle θ?
...and 4 more questions
Educational Video
Basic trigonometry | Basic trigonometry | Trigonometry | Khan Academy
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