Question

Find measure of an angle which is complementary of itself

Answer 1

The answer is 45. Deegre

Answer 2

Let the angle be $\large\sf \: {x}^{o}$

Complementary angle =

$\large \sf \: {90}^{o} - {x}^{o} \\ \large \sf \: x = {90}^{o} - {x}^{o} \\ \large = \sf \: x + x = {90}^{o} \\ \large\:= \sf \: 2x = 90^o \\ \large = \sf x = \frac{90}{2} \color{red}(transposing \: 2) \\ \large \sf \: \therefore \: x=45^o$