Question

Two complementary angel are 2x+12°,and X+21°.find X

Answer 1

Answer:

2x+12+x+21= 90

3x+ 33= 90

3x= 57

x= 19

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Answer 2

Answer:

=(2x+12)°+(x+21)°=90°

=2x+12+x+21=90

=3x+33=90

=3(x+11)=90

=x+11=90/3

=x+11=30

=x=30-11

=x=19