Question

Pleas help in math!! i need an explanation on how you got he answer too please!!

(no links please!)

Answer 1

a = 70 degrees.

Explanation:

Use this circle angle theorem:

The angle subtended by an arc at the center of a circle = 2 times the angle subtended by the arc on the circumference.

So m < a = 1/2 * 140 = 70 degrees.