A point on the edge of a symmetrical canyon is 4500 feet above a river that cuts through the canyon floor. The angle of depression from each side of the canyon to the canyon floor is 60o.
a) Find the length of the canyon wall (from the edge to the river).
feet
b) Find the distance across the canyon.
feet
c) Is it more or less than a mile across the canyon? (5280 feet = 1 mile) more or less
