Question

Solve for x. If needed, round your answer to 1 decimal place.

Answer 1

11.1

Explanation:

Using SOH CAH TOA (O=opposite, H=hypotenuse, A=adjacent). we can determine that to find x we need to use the cosine function.

Since cos=A/H, we can plug in the two numbers we have.

cos(42)=A/15 (Make sure your calculator is in degrees!!!)

Multiply 15 on both sides to isolate A and solve for cos(42) in your calculator.

15cos(42)=A, or approximately 11.1