1. A ball is attached to a spring, which is stretched and then let go. The height of the ball is given by the sinusoidal equation y = -2.5cos(t)+6 .where y is the height above the ground in feet and tis the number of seconds since the ball was released. How long, to the nearest tenth of a second, does it take for the ball to return to its starting height? Format Font Size В I US X x 99 A A Q I, Upload image

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