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4,-Find the angle between the lines xa and by+(10. |
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Answer» The line x = a is a straight vertical line, and the line by + c = 0, if rearranged, is y = -c/b. Since there is no x variable in y = -c/b, it is also a straight line, but a horizontal straight line. If one line is going straight up and down, and the other left and right, and the angle between them is 90° |
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