Which expression is equivalent to cos 2 pi for all values of pi?
a) cos2pi + sin2pi
b) cos2pi – 1
c) 1 – 2 sin2 pi
d) 2 sinpi cospi

How many degrees are there in the central angles in a circle

Joe owns a fast-food restaurant and wants to know the average time it takes for customers to receive their orders. his restaurant serves about 500 customers a day. he timed 5 orders, and the order times he collected, given in minutes, are shown below. can the approximate order fulfillment time for all of the restaurant's customers be calculated from the given data? if so, calculate it. non-integer answers should be rounded to the nearest tenth. if no assumption can be made, type "0" in the box. the approximate order fulfillment time for all of the restaurant's customers is minutes.

Two similar triangles are shown. triangle mno was dilated, to create triangle yhq. rotated reflected translated dilated