Question

Find the value of y in the
diagram below.

O 35
O 90
O 110
O 145

Answer 1

Check the picture below.

so the triangle with the 35° angle is an isosceles, namely a triangle with twin sides stemming from the center of the circle, well, twin sides make twin angles, and since the center of the circle makes a central angle, well, any arc will get its degrees from that.