I need help big time

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)?

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.