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Trigonometry: Angles


Problems

Problem : What is the difference between a vector and a ray?


Problem : A vector has origin at (1,2) and endpoint at (-3,-4). What is the horizontal, or x -component of this vector?


Problem : How many vectors are needed to form the coordinate plane?


Problem : A vector has origin at (-3,5) and endpoint at (0,8). What is the magnitude of this vector?


Problem : . . What is 3 ?