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.

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

answer: about 22.67

step-by-step explanation: