If cos 30° equals rad 3/2 then the sin 60° equals

a) 0
b) 1/2
c) rad 3/2
d) 1

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Find the missing variable for a parallelogram: a = latex: 28in^2 28 i n 2 h = b = 6.3 in (1in=2.54cm)

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?