m∠A = 42 and m∠C = 57. Find m∠B.

A. 81

B. 99

C. 132

D. 147

Question

Mathematics

Mariyah Mooney

7 February, 15:14

m∠A = 42 and m∠C = 57. Find m∠B.

A. 81

B. 99

C. 132

D. 147

+1

Answers (1)

Know the Answer?

Rudy · Answer 1

A.

because the total distance of every triangle 180. Add the two other angles so 42 + 57 = 99. Then you have to subtract those two combined angles to find the missing one from the total distance, which is 180. 180-99=81. the answer is A. 81

m∠A = 42 and m∠C = 57. Find m∠B.A. 81B. 99C. 132D. 147

m∠A = 42 and m∠C = 57. Find m∠B.

A. 81

B. 99

C. 132

D. 147