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Let u = 4 at an angle of 210° and v = 9 at an angle of 315º, and w = u - v. What is the magnitude and direction
angle of w?

w = 5.5; theta = 156.1°
w = 5.5; theta = 203.9°
w = 10.8; theta = 156.1°
w = 10.8; theta = 203.9°

Respuesta :

Answer:

C. |w| = 10.8; θ = 156.1°

Step-by-step explanation:

The magnitude and direction is |w| = 10.8; θ = 156.1°

What is vector?

A vector is a quantity or phenomenon that has two independent properties: magnitude and direction.

given:

|u| = 4, angle = 210

|v| = 9, angle = 315

So,

R = √u² + v² + 2uv cos θ

R= √16 + 81+ 19.75

R= √116.75

R= 10.8

Now, direction

θ = 156.1°

Learn more about this concept here:

brainly.com/question/15458306

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