For the figures shown, hjkl ~ qrst . the scale factor applied to hjkl to create qrst is 8 to 7. what is rs? a. 74 b. 72 c. 64 d. 49

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d.what is the height of the tide after 93 hours?

Can someone explain to me how to do