Knowee
Questions
Features
Study Tools

If coordinates of A , B and C are ( –1, 0, –3), (2, 3, –1) and (–1, 4, 2) respectively. Find a unit vector perpendicular to both 𝐴𝐵⃗⃗⃗⃗⃗ and 𝐴𝐶⃗⃗⃗⃗⃗ .

Question

If coordinates of A , B and C are ( –1, 0, –3), (2, 3, –1) and (–1, 4, 2) respectively. Find a unit vector perpendicular to both 𝐴𝐵⃗⃗⃗⃗⃗ and 𝐴𝐶⃗⃗⃗⃗⃗ .

🧐 Not the exact question you are looking for?Go ask a question

Solution

Sure, here are the steps to find a unit vector perpendicular to both AB and AC:

Step 1: Find the vectors AB and AC.

AB = B - A = (2 - (-1), 3 - 0, -1 - (-3)) = (3, 3, 2) AC = C - A = (-1 - (-1), 4 - 0, 2 - (-3)) = (0, 4, 5)

Step 2: Find the cross product of AB and AC. This will give us a vector that is perpendicular to both AB and AC.

AB x AC = (AB_yAC_z - AB_zAC_y, AB_zAC_x - AB_xAC_z, AB_xAC_y - AB_yAC_x) = (35 - 24, 20 - 35, 34 - 30) = (7, -15, 12)

Step 3: Find the magnitude of the cross product.

|AB x AC| = sqrt((7)^2 + (-15)^2 + (12)^2) = sqrt(49 + 225 + 144) = sqrt(418)

Step 4: Divide the cross product by its magnitude to get the unit vector.

Unit Vector = (7/sqrt(418), -15/sqrt(418), 12/sqrt(418))

So, the unit vector perpendicular to both AB and AC is approximately (0.342, -0.732, 0.585).

This problem has been solved

Similar Questions

If coordinates of A , B and C are ( –1, 0, –3), (2, 3, –1) and (–1, 4, 2) respectively. Find a unit vector perpendicular to both 𝐴𝐵⃗⃗⃗⃗⃗ and 𝐴𝐶⃗⃗⃗⃗⃗ .

a (non-zero) vector perpendicular to both ⎛⎝⎜−1−50⎞⎠⎟(−1−50) and ⎛⎝⎜−4−13⎞⎠⎟(−4−13) is

Obtain a unit vector perpendicularto both ˆ ˆA 5 3i j→= + and→= − − +ˆ ˆ ˆB 2i j k

Give a vector parametric equation for the line through the point (−4,3)(−4,3) that is perpendicular to the line ⟨3+2𝑡,4+2𝑡

Let⃗a = ˆi − ˆj + √2ˆk and⃗ b = −12ˆi + 5ˆja) Compute 3⃗a −⃗ bb) Find the unit vector in the direction of⃗ b.c) Compute the magnitude of⃗a .d) Find the direction angles (using the direction cosines) for⃗a .

1/3

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.