Can somebody please help me on this :)

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

If you answer 2+2 you will get over 80 points

If sin(x) = 0 and cos(x) = 1, what is tan(x)?