What is the best estimate for the product of 289 and 7

Find cot x if sin x cot x csc x = √2

What is the area of the shaded sector?

Pentagon abcde is dilated according to the rule do,3(x, y) to create the image pentagon a'b'c'd'e', which is shown on the graph. what are the coordinates of point a of the pre-image? a) (-1, 1)b) (-1, 2)c) (-9, 6)d) (-9, 18)