Answer:
a) 39 degrees
Step-by-step explanation:
angle REB + angle JEB = 180 degrees (because J, E, and R are collinear)
=> angle REB = 180 - angle JEB = 180 - 132 = 48 degrees
angle REB + angle ERB + angle RBE = 180 degrees (because the sum of 3 angles inside a triangle is 180 degrees)
=> angle RBE = 180 - angle REB - angle ERB = 180 - 48 - 93 = 39 degrees
