The base of a 75-ft fire truck ladder is at the rear of the truck and is 4.8 ft above the ground. If the ladder is extended backward at an angle of 62° with the horizontal, how high up on the building does it reach, and how far from the building must the back of the truck be in order that the ladder just reach the building? See Fig. 4.74.

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62° 4.8 ft Fire truck 75 ft Fig. 4.74 09