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OpenStudy (anonymous):
arctan(tan3π/4). The text answer is -3π/4. Why is the answer negative?
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OpenStudy (anonymous):
tan of 3pi/4 is -1. The arctan of -1 is -3pi/4. Drawing the graph may help you.
OpenStudy (anonymous):
And the moral of this is that 1/tan x is not equal to arctan x (it is not the reciprocal)
OpenStudy (anonymous):
thank you.
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