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Find the acute angle between the lines.

$ x + 2y = 7 $ , $ 5x - y = 2 $

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Calculus 3

Chapter 12

Vectors and the Geometry of Space

Section 3

The Dot Product

Vectors

Johns Hopkins University

Harvey Mudd College

University of Michigan - Ann Arbor

University of Nottingham

Lectures

02:56

In mathematics, a vector (from the Latin word "vehere" meaning "to carry") is a geometric entity that has magnitude (or length) and direction. Vectors can be added to other vectors according to vector algebra. Vectors play an important role in physics, engineering, and mathematics.

11:08

In mathematics, a vector (from the Latin word "vehere" which means "to carry") is a geometric object that has a magnitude (or length) and direction. A vector can be thought of as an arrow in Euclidean space, drawn from the origin of the space to a point, and denoted by a letter. The magnitude of the vector is the distance from the origin to the point, and the direction is the angle between the direction of the vector and the axis, measured counterclockwise.

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The problem is, I find is a cute angle between allies. Express to lie is likely to someone on Day five. Lacks minus Y is secret, too. So first we need to find a direction. Factors of this two lies with the lying ax. Plus two. Why is it that one face slow poses line? You sequel to negative one over two. So it's a direction back to off this line be you see, Can't you too? Negative block and face the slope off our fax months? Why would two is a cultural five that direction? Bacteria. It's the country one, then within out A acute angle between the lines is Leda. Then they if they could you assign humorous absolute one of you dot re over my intuitive be your few hands magnitude of B. This is because you're assigned numerous three over negative twenty six hands router. Far. This is a part seventy five degrees

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