Question 3 Figure 2 shows the circle PQRT with center O and radius 10cm. AQB is a tangent to the circle
at point Q. The straight lines AO and BO intersect the circle at point P and R respectively. OPQR
is a rhombus. The angle of BQR is 30° . ACB is an arc of a circle, center 0. Calculate;-
с
a. the angle a in term of it
B
b. the length of the arc ACB.
the area of the shaded region.
PX
R
a rad
c.
O