Question

Choose the correct answer and fill in the blanks :

Complement of $80°$is…………………. ($10°/100°$)

Answer 1

Complementary angles :

As we know that, two angles are said to be complementary angles if they add up to $90°$.

Let the complement of $80°$ be $x°$.

So, $80°+x°=90°$ ($\because$Complementary angles add up to $90°$)

$x°=90°-80°$ (By transposing $80°$from L.H.S. to R.H.S.)

$x°=10°$

Hence the complement of $80°$is $10°$.