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Mathematics 8 Online
OpenStudy (anonymous):

For an angle Θ with the point (−20, −21) on its terminating side, what is the value of cosine? Help please!!

OpenStudy (studygurl14):

First, graph the point on a coordinate graph. Then, draw a right triangle, using the x-axis acting as one of its legs. Use trigonometric ratios. |dw:1416179002566:dw|

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