Question

see the attachment and give the answer if you know please give the explanation​

Answer 1

Answer:

40

Step-by-step explanation:

angle A + angle B = 110 ( exterior angle property)

angle A = 110 - 70

so angle A is 40

I hope this helps u

Answer 2

Answer:

here, using exterior angle property,

∠MCB=∠CAB+∠CBA

∠CBA=110-70

∠CBA=40°.

THERE ARE OTHER METHODS... BUT THIS IS THE EASIEST.HOPE IT HELPS :D