1.) what is the relationship between sine & cosine?
a) sinθ=cos(90−θ)
b) sinθ=cos(180−θ)
c) sin90=cos(90−θ)
d) sinθ=cos(30−θ)

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.