(i)[3]
Write the perimeter of the shaded region in terms of $r$ and $\theta$.
(ii)[4]
When $r = 5$ and $\theta = 1.2$, find the area of the shaded region.
Mathematics 9709 · AS & A Level · Circular measure
Circular measure — practice question
The diagram depicts a circle with centre $O$ and radius $r$ cm. The points $A$ and $B$ are on the circle, and angle $AOB = 2\theta$ radians. The tangents drawn to the circle at $A$ and $B$ intersect at $T$.