Which equation could be used to find the value of x?

A: x=38tan(40)

Step-by-step explanation:

The one angle whose measure has been given is 40°. The side adjacent to the angle is labeled as having a length of 38, and the side opposite of the angle is labeled x. Since the tangent function is the only one that requires both the opposite and adjacent sides (which you can find through SOH-CAH-TOA), you can set up the equation:

Now all that's left is isolating the x-value. Multiply both sides by 38, which will cancel on the right side and leave the following equation:

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.

ab will be equal to