Compute the angle between the two planes, defined as the angle (between 0 and ) between their normal vectors (Figure 10). 3(x 1)

Compute the angle between the two planes, defined as the angle θ (between 0 and π) between their normal vectors (Figure 10).

3(x − 1) − 5y + 2(z − 12) = 0 and the plane with normal n = (1, 0, 1)

n 112 n2 0 n PL P 0 L