# Thread: Find the magnitude and bearing of the vector v=<5,-7> to the nearest whole vaule

1. ## Find the magnitude and bearing of the vector v=<5,-7> to the nearest whole vaule

How do i find the answer?

2. ## Re: Find the magnitude and bearing of the vector v=<5,-7> to the nearest whole vaule

Imagine setting that vector in an xy-coordinates system- the tail of the vector is at (0, 0) and its tip is at (5, -7). Drawing a line from the tip perpendicular to the x-axis gives a right triangle where one leg has length 5 and the other leg with (signed) length -7. What is the length of the hypotenuse of that right triangle? What angle does the hypotenuse make with the x-axis?

3. ## Re: Find the magnitude and bearing of the vector v=<5,-7> to the nearest whole vaule

Originally Posted by Gummg
How do i find the answer?
Sorry but that question make little sense to me,
The magnitude is $\sqrt{(5)^2+(-7)^2}$. I have no idea what bearing means in this context.

4. ## Re: Find the magnitude and bearing of the vector v=<5,-7> to the nearest whole vaule

I got 9 for the magnitude but how do i get the angle?