Question

HELP PLEASE NEED FAST

Answer 1

D) 54°

Explanation:

Trigonometry ratio:

Here, hypotenuse and adjacent side of the unknown angle is given. So, to find the unknown angle, we have to use the ratio Cos.

`\sf Cos \ \theta = (adjacent \ of \ \angle \theta)/(hypoenuse)`

`\sf = (7)/(12)\\\\\\= 0.5833`

`\sf \theta = Cos^(-1) \ 0.5833`

`\sf \theta = 54.31 \\\\\theta = 54^\circ`