A recipe requires 3 cups of flour to make 27 dinner rolls. How much flour is needed to make 9 rolls?
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Answer:
Step-by-step explanation:
<u>Position in the Plane </u>
If we place an object in a plane and mesure its x and y coordinates, we are referencig its position according to the rectangular system. Other popular way to reference positions is in polar form or magnitude-angle form. If we have the rectangular coordinates (x,y), we can easily find the polar coordinates (and vice-versa). We use the formulas
We have x=31.4 Km East (a positive coordinate) and y=-102.5 Km South (negative because it's pointing downwards). we need to find the angle respect to the East reference where . Check the image below for reference.
The angle can be also given as a positive quantity by adding 360^o
