4. In the figure, the circle POR
figure the circle PQR with centre T and with radius r is enclosed m
sector OAB with centre at O and radius 48 cm.
Find
(i) the value of r,
(ii) the area of the shaded region.

Solve 5 tan x = 5√(3) for 0° ≤ x ≤ 180°. a. 60° b. 150° c. 30° d. 120°

Find an equation of the line perpendicular to the graph.

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.