Question

3/27
cosθ=
\frac{opposite}{adjacent}
\frac{opposite}{hypotenuse}
\frac{hypotenuse}{adjacent}
\frac{adjacent}{hypotenuse}

Explanation:

Step1: Recall the definition of cosine in a right - triangle

In a right - triangle, the cosine of an angle $\theta$ is defined as the ratio of the length of the adjacent side to the length of the hypotenuse.

Answer:

$\frac{\text{adjacent}}{\text{hypotenuse}}$ (the fourth option)