Question

Look at image and solve​

Answer 1

dac=90-(30+45)

=90-75

=15

hope it helps

It is complementary

Answer 2

it is complementary angle.

15degrees

Explanation:

complementary angle is when the sum of angles is equal to 90degrees.

45+30+<DAC=90

75+<DAC=90

<DAC=90-75

<DAC=15 degrees.