If θ is a positive acute angle and cosθ =k, which is an expression for tan θ in terms of k?

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?