Siobhan is preparing for her beach party in january. she needs to buy 120 cubic feet of sand to cover her garage floor. sand comes in bags of 10 cubic feet. each bag of sand costs $7.50, including tax. how much money does siobhan need to turn her garage into a beach?

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step-by-step explanation:

d = distance between moon and sun, which in this problem is the hypotenuse of a right triangle.  

the distance y is the side opposite to angle x in the right triangle.   use the definition of the sine function from basic trigonometry.

sin(x) = y/d ⇒

d = y/sin(x)