A circular wire of radius 7.5 cm is cut and bent so as to lie along the circumference of a circular hoop whose radius is 120 cm. Find, in degrees, the angle which is subtended at the centre of this hoop.
Solution
Short Answer
Length of the circular wire of radius 7.5 cm Which is cut and bent = ∴ For the circular hoop, Let the angle be radians, Using, we have Hence, the angle subtended at the centre is