Question

In the given diagram, ABC is a straight line. If y =`1 1/2` right angles; find x.

Answer 1

From figure again,

x + y = 180°

1 + `3/2 xx 90` = 180°

⇒ x + `1 1/2` right angles = 180°

⇒ x + `3/2 xx 90 = 180°`

⇒ x + 135°= 180°

⇒ x= 180° – 135°

⇒ x = 45°