How does tan^-1(17/2)=83.3? i've tried to solve this a few times and keep getting 1. show work if possible

Put your calculator in degrees mode.

1.45 is the correct number of radians.

1 and 2

step-by-step explanation:

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0