tan x=sinx/cosx
and tan x is negative in the second and fourth quadrants.
tan x=1 for 45 degrees so tan x=-1 in the second quadrant 135 degrees and the fourth quadrant= 315 degrees
Khoa N.
asked • 05/13/20Solve for 0≤θ<360 : tanθ=−1 .
How do i do this question?
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