Question

Suppose Đ1 and Đ2 are known to be complementary. If mÐ1 = 20, then mÐ2 =

0 20
O 70
0 340
0 160

Answer 1

70

Explanation:

complementary angles are 2 angles that add up to 90, the first angle is already 20 so just subtract 90-20 to find other angle