Question

What is the measure of an angle if it is double its complement?

Answer 1

let y be that angle...

so its complement is 90 - y

if it's double 90 - y then the value would be

2(90 - y) = 180 - 2y

so 180 - 2y + 90 - y should equal 90 because they are complements

180 - 2y + 90 - y = 90

combine like terms

270 - 3y = 90

subtract 90 from both sides

180 - 3y = 0

add 3y to both sides

180 = 3y

divide both sides by 3

180/3 = y

simplify

60 = y

does that help?

Answer 2

the answer that was given was 130