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Mathematics
Trigonometry
Sign of Tangent in Each Quadrant
in 2 sentences, describe how to determine the sign for tan0 in each quadrant of the coordinate plane.
1 answer
In the first quadrant, tan0 is positive because both the sine and cosine of 0 are positive. In the second, third, and fourth quadrants, tan0 is negative because either the sine or cosine of 0 is negative.
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