Question

Write the trigonometric ratio for cos X as a fraction and as a decimal rounded to the nearest hundredth

Answer 1

Answer: The correct choice is letter C.

Step-by-step explanation:

Cosine = adjacent/hypotenuse

In this triangle, you are looking for angle degree of cos X.

When finding an angle degree, you must use the inverse of whatever trig ratio you are using. In this case, you would use $cos^{-1}$.

The adjacent side from x is 12 and the hypotenuse is 15.

So you form your trig ratio which is your answer.

$cos^{-1}$ $\frac{12}{15}$ = 0.80