You might need: Calculator Isabella is playing with her yo-yo. The vertical distance Y (in cm) between the yo-yo and her hand t seconds after she first spins it out is modeled by the following function. Here, t is in radians. Y (t) = 40 cos - 71 How long does it take the yo-yo to fall all the way down from its peak, and then rise up to a vertical distance of -80 cm? Round your final answer to the nearest tenth of a second. seconds Trigonometric identity reference sheet] Show Calculator