A quadrilateral named JKMN has four sides, JK, KM, MN, and N J. The slopes of JK and MN are both 3/4
and the slopes of KM and NJ are both – 4/3
Is this quadrilateral a type of rectangle? How do you know?
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How can you tell when x and y are not directly proportional?

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.