If cosø = -5/13 and sin ø<0 what is tan ø

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

If sin(x) = 0 and cos(x) = 1, what is tan(x)?