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In Mathematics / High School | 2014-10-29

CAN SOMEONE PLZ HEP!?!?!?

Asked by gntingidx

Answer (2)

The area of the collector panel is (its length) x (its width).
You know the long dimension ... it's 12 feet. You need to find the short dimension.
The short dimension is the hypotenuse of the right triangle at the end of the whole setup ,,, the triangle colored black.
In that right triangle, the leg standing up is 5-ft, and the acute angle that's down on the roof is 54° degrees. Can you find the length of the hypotenuse with this much information ?
How about . . . . . sin(54°) = 5 / hypotenuse ? (This is the big breakthrough. From here, the answer practically falls into your lap.)
Multiply each side by 'hypotenuse' : sin(54°) x (hypotenuse) = 5
Divide each side by sin(54°) : Hypotenuse = 5 / sin(54°)
And there it is.
Area of the collector = (12-ft) x [ 5-ft / sin(54°) ]
That's (60 square feet) / sin(54°) = 74.164 square feet (rounded)

Answered by AL2006 | 2024-06-10

To find the short dimension (hypotenuse) of the triangle, we use the sine function: hypotenuse = 5 / sin(54°), which equals approximately 6.19 feet. The area of the collector panel can be calculated as Area = length × width = 12 ft × 6.19 ft, yielding an area of approximately 74.28 square feet. This formula is essential for determining the size of a solar collector in energy applications.
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Answered by AL2006 | 2024-12-26