Trigonometric Ratios: Cosine - Concept

Concept Concept (1)

Right triangles have ratios that are used to represent their base angles. Cosine ratios, along with sine and tangent ratios, are ratios of two different sides of a right triangle. Cosine ratios are specifically the ratio of the side adjacent to the represented base angle over the hypotenuse. In order to find the measure of the angle, we must understand inverse trigonometric functions.

Sample Sample Problems (2)

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Trigonometric Ratios: Cosine - Problem 1
Problem 1
How to find the cosine of an angle in a right triangle.
Trigonometric Ratios: Cosine - Problem 2
Problem 2
How to find the length of a hypotenuse in a right triangle, given a side length.