Question

question 2 of 12
which of the following ratios correctly describes the cosine function?
a. \\(\frac{opp}{hyp}\\)
b. \\(\frac{opp}{adj}\\)
c. \\(\frac{adj}{hyp}\\)

Explanation:

In right triangle trigonometry, the cosine of an acute angle is defined as the ratio of the length of the adjacent side to the angle to the length of the hypotenuse (the longest side of the right triangle).

• Option A is the sine ratio ($\frac{opp}{hyp}$).
• Option B is the tangent ratio ($\frac{opp}{adj}$).
• Option C matches the definition of cosine.

Answer:

C. $\frac{adj}{hyp}$