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

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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 1 (143.19 KiB) Viewed 36 times

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=21​r2(θ−sinθ) c) Determine the length of the radius of the semi-circle.