42 inches of wire will cost 168 cents
Look at the pic to see how to set up the proportion.
Look at the pic to see how to set up the proportion.
Inez Walks 1.85 mi in 45 minutes , how many miles can she walk in 1 hour?
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First thing to do is to change the radians to degrees so it's easier to determine our angle and where it lies in the coordinate plane. 
. If we sweep out a 210 degree angle, we end up in the third quadrant, with a 30 degree angle. In this quadrant, x and y are both negative, but the hypotenuse, no matter where it is, will never ever be negative. So the side across from the 30 degree reference angle is -1, and the hypotenuse is 2, so the sine of this angle, opposite over hypotenuse, is -1/2