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Lesson: Trigonometric Ratios Mathematics

In this lesson, we will learn how to find and express the values of the three trigonometric ratios—sine, cosine, and tangent—for a given angle in a right triangle.

Lesson Worksheet

Q1:

Find , given that is a right triangle at , where and .

Q2:

What is the value of in the given triangle?

Q3:

A 5 m ladder is leaning against a vertical wall such that its base is 2 m from the wall. Work out the angle between the ladder and the floor, giving your answer to two decimal places.