SOLUTION: The x-direction cosine of a line is -5/13 and the y-direction cosine, c2, is positive. What is c2?
Please help.
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Question 256629: The x-direction cosine of a line is -5/13 and the y-direction cosine, c2, is positive. What is c2?
Please help. Answer by drk(1908) (Show Source):
You can put this solution on YOUR website! If the x direction of cosine is -5/13, then we have 2 options for the y direction. The y direction is called sine not cosine.
cos(x) = -5/13
sin(x) = +-12/13
sin^2(x) = 144/169.
I hope that is what you wanted.
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