Question

please friends find a and b​

Answer 1

Answer:

b=75° (two lines are parallel )

a=180-75

=105° (total angale in a in a semicircle =180)

Answer 2

Step-by-step explanation:

Angle B and Angle 75° ------------------ Pair of corresponding angles

Therefore, angle B is 75°

Angle 75° + Angle A= 180 --------------- Linear pair

Angle A= 180-75

Angle A= 105°

Correct explanation

hope you understand