Question

Are the following pairs of angles complementary?
(i) 54 degree and 2 by 5 of a right angle
(ii) (x + 36) degree and (44-x) degree

with full solution

Answer 1

1- 54+(90×2/5)= 90
90 = 90 yes is.
2- (x+36+44-x) = 90
90 is not equal to80. no it's not

Answer 2

i)2/5 of 90=36,
54+36=90,
they are complementary
ii) (x+36)+(44-x)=x+36+44-x
=80
they are not coplementary