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You set up a makeshift greenhouse by leaning a square pane of glass against a building. The glass is 4.5 ft long and it makes a 30 degree angle with the ground. How much horizontal distance between the building and the glass is there to grow plants? Round to the nearest inch.
13 years ago

Answers

Reiny
make a sketch, label the base distance as x
then cos 30° = x/4.5
x = 4.5cos30° = 3.897 inches or 4 inches to the nearest inch
13 years ago

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