Question

Help ASAP!!!

Identify the correct trigonometry formula to use to solve for x.

Answer 1

Answer:

cos(55) = 11/x

Step-by-step explanation:

We have the hypotenuse (x) and an angle adjacent to 55 (11). The only trigonometric formula that uses adjacent and hypotenuse is cosine (adjacent/hypotenuse), so that will be your answer.

Answer 2

Answer:

The answer is option 2.

Step-by-step explanation:

You have to apply Cosine Rule, cosθ = adjacent/hypotenuse. Then, you have to substitute the values into the formula :

$cos(θ) = \frac{adj.}{hypo.}$

$let \: θ = 55$

$let \: adj. = 11$

$let \: hypo. = x$

$cos(55) = \frac{11}{x}$