Please help. Need it ASAP

Anyone know? will mark brainliest if correct!

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7