Question

A Ferris wheel makes 3 revolutions per minute. If the diameter is 20 feet, write an equation to describe the height off the ground of a particular seat after t seconds.

I got d=10cos(6pi)t as the answer, is this correct?

Answer 1

Yes, if the seat starts at the top.

Though you should write cos(6pi t).
As it is, it looks like cos(6pi) is the function. The parentheses are used to enclose the argument of the function.

Answer 2

hsyv