geometry

posted by .

I totally don't understand Vectors
How do you describe a vector as an ordered pair?
on the x and Y where they cross it is 41 degrees and goes to the left up to the y 77

I am totally confused Help

  • geometry -

    There are two common ways to describe a point in the plane.

    Most familiar is the rectangular coordinates (x,y) which says how far left-right or up-down the point is from the origin (0,0).

    Another way is to specify how far away a point is from the pole (0,0), and in which direction θ. The direction is usually expressed as 0-360° when first learning about polar coordinates.

    So, you need to get familiar with the circle and how to handle degrees.

    An (x,y) pair can be determined from an (r,θ) pair by referring to the right triangle with the vector to the point as hypotenuse.

    x = r cosθ
    y = r sinθ

    to go the other way,

    tanθ = y/x
    r2 = x2 + y2

    If all this looks unfamiliar, you need to check your textbook and have a one-on-one session with someone in person.

    It sounds like your question is referring to a point where
    θ = 41°
    r = 77

    To get the (x,y) coordinates,

    x = 77 cos 41° = 58.1
    y = 77 sin 41° = 50.5

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. PHYSICS VECTORS

    1. The problem statement, all variables and given/known data Find the vector product of Vector A cross Vector B(expressed in unit vectors) of the two vectors. What is the magnitude of the vector product?
  2. 12th grade

    prove that normal to plane containing 3 points whose position vectors are a vector,b vector,c vectorlies in direction addition of cross product of vectors b and c and cross product of vectors c and a and cross product of vectors a …
  3. Mamthematics - Vectors

    a) If vector u and vector v are non-collinear vectors show that vector u, vector u cross product vector v and (vector u cross product vector v) cross product vector u are mutually othogonal. b) Verify this property using vectors collinear …
  4. Physics

    2. We have two vectors that line in the x-y plane. If we take the cross-product of those two vectors we know that a. the magnitude of the cross-product will always be equal to the product of the magnitudes of the two vectors. b. the …
  5. Vectors?

    find an ordered pair to represent vector u in u = (3/4)w-2v if vector w = <-2/3,4> and vector v = <3/8,-2> How do i do this?
  6. Calculus

    1. Find an ordered pair that represents 6 vector v - 5 vector w if vector v =(9,5) and vector w = (6,9). 2. Find an ordered triple that represents 6 vector y + 4 vector z if vector y = (2,6,8) and vector z = (7,-2,6) 3. Find the magnitude …
  7. math

    The cruising speed of a Boeing 767 in still air is 530 mph. Suppose that a 767 is cruising directly east when it encounters an 80 mph wind blowing 40 degrees south of west. Sketch the vectors for the velocities of the airplane and …
  8. Vectors

    Use a specific example to prove that the cross product is also not associative. That is, use three specific vectors in 3-sapce to show that Vector a×(Vector b × Vector c) is not equal to (Vector a × Vector b) × Vector c.
  9. Vectors

    Verify (Vector a + Vector b) × (Vector a + Vector b) = 0⃗ . What can be said about two vectors whose cross product is the zero vector?
  10. Physics

    This is another question I had too and didn't understand as well. Vector Addition: Use the head to tail method to determine the resultant vector of the following velocity vectors. V1= 540m/s @66 degrees V2= 12m/s @182 degrees V3= 96m/s …

More Similar Questions