Question

Please do simple working out :))

Answer 1

Angle B = 27°

Explanation:

Since XY is a straight line, all the angle add up to 180°

Let the 90° angle marked by the color yellow be angle c

Given

Angle A = 63°

Angle C = 90°

Therefore

Angle A + Angle B + Angle C = 180°

63 + Angle B + 90 = 180

Angle B = 27°

Answer 2

Explanation:

See all the angles need to add up to 180 degrees. and angle a is 63 degrees and the one in the middle is 90 degrees. so 63+90= 153. Add 27 degrees it will be 180 degrees so there for the answer in B=27 degrees.