Asked by Anonymous
Erik and Zach are camping. Erik leaves Zach at the campsite and walks 3.6 miles. He then turns at a 114˚ angle and walks another 2.3 miles. If Erik were to walk directly back to Zach, how far would he walk? (draw a picture to help you solve)
Answers
Answered by
Steve
did you draw a diagram? If so, you can see that the distance x is found using the law of cosines:
x^2 = 3.6^2 + 2.3^2 - 2*3.6*2.3*cos66˚
x^2 = 3.6^2 + 2.3^2 - 2*3.6*2.3*cos66˚
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