37 11 Let z < 1 < and sin (1) = -. Use a double-angle formula to find sin (21). 12 (Give an exact answer. Use symbolic notation and fractions where needed.) sin (21) =

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A: work done = force*displacement here  a from 12ft to 15 ft  3 ft displacement  work done = 80*3 = 240…

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A: Hi! The answer to the solution was f(t)=sint. You have entered the answer incorrectly.