b) In the figure alongside, o is the cente of circle, P the mid-point of the chord XY. If ZPOY = a, XY = 18 cm and OY = 15 cm, find the , trigonometric ratios of sina and tana.

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20