At a pep rally, cheerleaders use a slingshot to launch small, foam basketballs into the crowd. The release point is 5 ft above the gym floor, and the balls are shot with an initial upward velocity of 52 ft/s. Suppose a ball is caught 17 ft above the floor on its way down by a student in the stands. How long is the ball is the air?

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

1260=3*6*7*10=3^2*2^2*7*5 perfect cude = 3^3*2^

step-by-step explanation:

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