Question

1. what is the value of y? a) 45 b) 10 c) 21 d) 30

Explanation:

Step1: Use the triangle angle sum property

The sum of angles in a triangle is \(180^{\circ}\). So, \(y + 90^{\circ}+ 60^{\circ}=180^{\circ}\).

Step2: Solve for \(y\)

\(y=180^{\circ}-(90^{\circ}+ 60^{\circ})\)
\(y = 180^{\circ}-150^{\circ}\)
\(y = 30^{\circ}\)

Answer:

d) \(30\)