Question

The measure of two complementary angles is in the ratio 1 : 9. What are the degree measures of the two angles?

Answer 1

complementary angles add to 90

so the ratio is 1:9

add the parts in the ratio 1+9

and then divide the angle size by the sum of the ratio.

You will have the value of 1 part of the ratio...

this is called the unitary method..

if you know 1 part then you should be able to calculate 9 parts.