1 The points A and B are the on the circumference of a semi-circle with equation y=18−x2 such that AB is parallel to th
Posted: Thu Jul 14, 2022 4:31 pm
1 The points A and B are the on the circumference of a semi-circle with equation y=18−x2 such that AB is parallel to the x-axis and AO^B=θ. a) If B(x;18−x2), write down the coordinates of A. b) Show that the area of the shaded region is given by: A=21r2(θ−sinθ) c) Determine the length of the radius of the semi-circle.