We need to calculate the three trigonometrics relations on the right triangle. They are as follow:

We need to use this values on each option. The "sin^-1" is the inverse of the sine, the "cos^-1" is the inverse of the cosine and the "tan^-1" is the inverse of the tangent. If we use these values on the functions we will find the value of theta.

The angle is equal to 66.93 degrees