lexhorton2002
23.05.2021 •
Mathematics
Find the area of the parallelogram whose sides are given by vectors a and b. Use the cross product only.
(Area of the parallelogram = a x b = a cross b)
a = [ 6,3,4], b = [ 2, 5, 1]
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Ответ:
9514 1404 393
√869 ≈ 29.48 square units
Step-by-step explanation:
The vector cross product is ...
(3·1 -5·4, -6·1 +2·4, 6·5 -2·3) = (-17, 2, 24)
The area is the magnitude of this vector, so is ...
√((-17)² +2² +24²) = √(289 +4 +576) = √869 ≈ 29.48
The area is about 29.48 square units.
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