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Lesson: Trigonometric Ratios of Special Triangles Mathematics • 11th Grade

In this lesson, we will learn how to find the side lengths of 45-45-90 and 30-60-90 triangles using trigonometric ratios.

Lesson Plan

Students will be able to

use trigonometric ratios to find the side lengths of 45-45-90 and 30-60-90 triangles.

Lesson Video

Lesson Worksheet

Q1:

A ladder 8 meters long leans against a wall. Find the horizontal length between the base of the ladder and the wall given the angle between the ladder and the ground is .

Q2:

Find, in terms of , the length of the hypotenuse of this triangle.

Q3:

In the figure, the length of is .

Find the length of .

Given that the length of is 6, find the length of . Give an exact answer.

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