In a race usain bolt accelerates at 1.99m/s2 for the first 60.0 m, then decelerated at -0.266m/s2 for the final 40.0m. what is his final velocity?

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

the answer will be -6x^2 +46

step-by-step explanation:

answer is b 270°

i got it down for you chief.