Let mza = 40°. if zb is a complement of a, and 2c is a supplement of 2b, what is m4b+m2c?
a. 600
b. 150°
c. 180°
d.210°

Step-by-step explanation:

m<A = 40°

Is 2B is a complimentary angle to A that means the sum is 90°

40 + 2B = 90°

2B = 90 - 40

2B = 50

B = 50/2

B = 25°

If 2C is a supplementary angle to 2B then the sum is 180°

2C + 2B = 180°

2C + 50 = 180

2C = 180 - 50

2C = 130°

C = 130/2

C = 65°

So

m4B+m2c = 4(25) + 2(65)

m4B+m2c = 100 + 130

m4B+m2c = 230°