purplepanda69
12.10.2019 •
Mathematics
Vectors a and b have scalar product -3.00 and their vector product has magnitude 5.00. what is the angle between these two vectors?
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Ответ:
a.b = scalar product = -3
[a][b] = vector product = 5
a.b = [a][b]cosθ
-3 = 5cosθ
(-3/5) = cosθ
-0.6 = cosθ
cosθ = -0.6
Take the arc cos of both sides.
θ = cos⁻¹(-0.6)
θ ≈ 126.87° using a calculator.
The angle between the two vectors ≈ 126.87°
Hope this helps.
Ответ:
120 cubic feet is the answer.