Question

which equation can be used to find the measure of angle bac?
○ tan⁻¹(5/12)=x
○ tan⁻¹(12/5)=x
○ cos⁻¹(12/13)=x
○ cos⁻¹(13/12)=x

Explanation:

Step1: Identify angle BAC sides

Adjacent=5, Opposite=12, Hypotenuse=13.

Step2: Recall tan(theta) definition

tan(theta)=opposite/adjacent=12/5.

Step3: Solve for theta

theta=tan⁻¹(12/5)=x.

Answer:

B. tan⁻¹(12/5) = x