# Vector Cross Product and Arc length

1 Given a = <4, -3, -1> and b = <1, 4, 6>, find a X b.

2 Find the arc length of the curve given by x = cos 3t, y = sin 3t, z = 4t, from t = 0 to

t = pi/2.

https://brainmass.com/math/vector-calculus/vector-cross-product-and-arc-length-118236

#### Solution Summary

Vector Cross Product and Arc length are investigated.

$2.19