Asine function has the following key features: frequency = 1/4π amplitude = 2 midline: y = 2 y-intercept: (0, 2)

180-142=38 for the acute angle next to the entry

90+38=128

180-128=52

a=52

step-by-step explanation:

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.