Sally's summer punch recipie is a combo of lemonade and fruit punch.

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

7x+8y=-18, 4x-9y=-3 solve the system of equations

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.