SOLUTION: use the graph to solve interval [-2pi, 2pi] with tan x=1
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Question 836362: use the graph to solve interval [-2pi, 2pi] with tan x=1
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
tan x = 1 means that sin x = cos x. In other words, the x- and y-coordinates of a point z on the unit circle are equal. This occurs at x = pi/4 and x = 5pi/4.
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