Answer:
s = 75°
t = 105°
Explanation:
Vertically opposite angles are non-adjacent angles formed when two lines intersect, and they are equal.
s = 75°
When two parallel lines are cut by a transversal, the angles that holds on the same relative position on the same side of the transversal are called corresponding angles and they are congruent.
∠1 = 75° {correpsonding angles}
Linear pair: If the non-common arms of the two adjacent angles form a straight line, they are called linear pair and they add up to 180°.
t + 75° = 180 {linear pair}
t = 180 - 75
t = 105°