# Pre Calc

find the magnitude and direction angle of the vector v, v=-2i+5j

please help i have no idea how to do this. could you show me step by step?

1. 👍
2. 👎
3. 👁
1. magnitude : square root of ( (-2)^2 + 5^2 ) = (4 + 25) = sqrt 29 = 5.38516
angle = 180 + tan^-1(5/-2) = 179.9 = 180 degrees.

1. 👍
2. 👎

## Similar Questions

1. ### physics

Vector vector A has a magnitude of 27 units and points in the positive y-direction. When vector vector B is added to vector A , the resultant vector vector A + vector B points in the negative y-direction with a magnitude of 18

2. ### Physics

Vector A has a magnitude of 29 units and points in the positive y-direction. When vector B is added to A, the resultant vector A + B points in the negative y-direction with a magnitude of 15 units. Find the magnitude and direction

3. ### physics

Vector A has a magnitude of 8.00 units and makes an angle of 45.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods, find (a) the vector sum

4. ### wits

Vector A has magnitude of 75 units and points in the positive x direction.vector C = A+B points points in the y direction and has magnitude of 95m.(a) sketch vector A; B & C. (b) Estimate the magnitude & direction of vector B. (c)

1. ### Physics

The vector -5.2A⃗ has a magnitude of 40m and points in the positive x direction. Find the x component of the vector A⃗ ? I do not understand how I am supposed to figure this out with just having the magnitude of the vector.

2. ### physic

Vector A,with a magnitude of 23 units, points in the positive x direction. Adding vector B to vector A yields a resultant vector that points in the negative x direction with a magnitude of 8 units. What are the magnitude and

3. ### science (physics) Need to solve this today please

(a) Express the vectors A, B, and C in the figure below in terms of unit vectors. (b) Use unit vector notation to find the vectors R = A + B + C and S = C – A – B. (c) What are the magnitude and directions of vectors R and S?

4. ### Physics

There are two forces on the 2.36 kg box in the overhead view of Fig. 5-31 but only one is shown. For F1 = 18.6 N, a = 11.4 m/s2, and θ = 26.7°, find the second force (a) in unit-vector notation and as (b) a magnitude and (c) a

1. ### geometry

In problems 1 and 2, the initial point and the terminal point of a vector are given. Write the vector in component form. 1. Initial point: (0, 0); Terminal point: (3, -4) A Lesson 13 B Lesson 13 C Lesson 13 D Lesson 13 E Lesson 13

2. ### MATH

Find the vector v with the given magnitude and the same direction as u. Magnitude: ||v|| = 8 Direction: u = ‹6, -6› STEP 1: Find the magnitude of u. STEP 2: Use your result from Step 1 to compute a unit vector, u1, in the same