Question

Find the value of x in the below diagram.
[3 MARKS]

Answer 1

Property : 1 Mark
Steps : 1 Mark
Result : 1 Mark

Let the triangle be ABC with $\angle A$ being x and $\angle B$ be the right angle.

In a triangle, Sum of opposite interior angles = exterior angle
Here,
x + 90${}^o$ = 150${}^o$
Or, x = 150${}^o$ - 90${}^o$ = 60${}^o$