20 ft high at a rate of 209ft/sec when will the arrow hit the ground

The trigonometric ratios sine and secant are reciprocals of each other

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%