Question

Please please tell me ​

Answer 1

Step-by-step explanation:

90-20=70°

90-63=27°

90-57=33°

Answer 2

Step-by-step explanation:

1) 90-20=70°

2) 90-63=27°

3) 90-57=33°

I have subtracted from 90° bcoz A+B=90°{ a and b are angles}