Question 969182

by definition,  Complementary Angles add up to {{{90}}}°.

if you are given {{{x+(x+10)=90}}} means one angle is {{{x}}} and its complement is {{{x+10}}}

so, we need to solve {{{x+(x+10)=90}}} for {{{x}}}

{{{x+x+10=90}}}

{{{2x=90-10}}}

{{{2x=80}}}

{{{x=80/2}}}

{{{x=40}}}°.....one angle

{{{x+10=40+10=50}}}°....its complement