Question

If O is the centre of the circle in the given figure and XY = ZX, then find the value of `a'.

• A. 30⁰
• B. 45⁰
• C. 60⁰
• D. 65⁰
• E. 85⁰

Answer 1

The correct option is B

45⁰

Given $\Delta$XYZ is a right angled isosceles triangle.

So the measure of $\angle$X will be 90${}^0$.

So, the measure of the other angle will be 90${}^0$/2 = 45${}^{\circ }$.