Question

Given triangle ABC, which equation could be used to find the measure of ∠C?

a) cos m∠C
b) sin m∠C
c) cos m∠C = sin m∠C
d) sin m∠C

Answer 1

The equation that can be used to find the measure of angle C in triangle ABC is cos m∠C.

Step-by-step explanation:

The equation that can be used to find the measure of angle C in triangle ABC is a) cos m∠C.

In a triangle, the cosine function can be used to find the measure of an angle when the lengths of the sides are known. The cosine of an angle is equal to the ratio of the adjacent side to the hypotenuse.

For example, if we know the lengths of sides AB and AC in triangle ABC, we can use the equation cos m∠C = AB/AC to find the measure of angle C.