Question

ab is a diameter of a circle with Centre o c is a point on the circumference of that angle C o b is equal to theta the area of the minor segment cut off by the is equal to twice the area of the sector BAC prove that sin theta by 2 cos theta by 2 is equal to pi bracket half minus theta by 120 bracket

Answer 1

$120 \times 1 = 120 \\ 2 \times 0 = 0 \\ 120 - 0 = 120$