Posted by **Paige** on Thursday, August 30, 2012 at 4:55pm.

Consider the vectors A = 2.00 i + 7.00 j and B = 3.00 i - 2.00 j.

(a) Sketch the vector sum C = A + B and the vector subtraction D = A - B.

(b) Find analytical solutions for C and D first in terms of unit vectors and then in terms of polar coordinates, with angles measured with respect to the positive x axis.

I just can't figure out what the degree should be for the D vector polar coordinate

- AP Physics -
**bobpursley**, Thursday, August 30, 2012 at 5:16pm
D=-i+9j

angle of D= arctan 9

- AP Physics -
**Steve**, Thursday, August 30, 2012 at 5:17pm
A+B = (2+3)i + (7-2)j = 5i+5j

A-B = -i+9j

just draw a triangle with hypotenuse from (0,0) to (-1,9)

tanθ = 9/-1

θ = 180+83.66° = 263.66° or -96.34°

- AP Physics - correction -
**Steve**, Thursday, August 30, 2012 at 5:19pm
Oops. That would be

180-83.66 = 96.34°

- AP Physics -
**Paige**, Thursday, August 30, 2012 at 6:44pm
thank you! the answer was 96.3

## Answer this Question

## Related Questions

- Physics - Three vectors, each have a magnitude of 30 units, have their tails at ...
- calculus - State whether or not the following statements are true. Justify your ...
- Physics - When two vectors vector A and vector B are drawn from a common point, ...
- Vectors - Verify using an example that Vector a + (Vector b • Vector c) is not ...
- Mamthematics - Vectors - a) If vector u and vector v are non-collinear vectors ...
- Math - vectors - In the product F(vector)=q(V(vector)xB(vector), take q = 4, V(...
- cartesian vectors 2 - let vector U = (vector u1, vector u2) vector V = (vector ...
- Vectors - Verify using an example that Vector a + (Vector b • Vector c) is not ...
- Vectors - Verify (Vector a + Vector b) × (Vector a + Vector b) = 0⃗ . ...
- Physics - The two vectors a and b have equal magnitudes(on an x-y plane vector a...

More Related Questions