How to find the cosine of 81 in terms of sine?

What could explain what happened when the time was equal to 120 minutes

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

Samantha is growing a garden in her back yard. she spend $90 setting up the garden bed and buying the proper garden supplies. in addition, each seed she plants cost $0.25. a. write the function f(x) that represents samantha's total cost on her garden. b. explain what x represents. c. explain what f(x) represents. d. if samantha plants 55 seeds, how much did she spend in total?