It is known that angle A and angle B complement each other, and half of angle B is 30 degrees smaller than angle A. find the degree of angle A and angle B. why is angle a equal to 30?)

It is known that angle A and angle B complement each other, and half of angle B is 30 degrees smaller than angle A. find the degree of angle A and angle B. why is angle a equal to 30?)

180-30 = 150 angle a = 150 / 3 + 30 = 80 degree
Angle B = 150 / 3 * 2 = 100 degree

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