Asked by Joe

tanx=cotx

Answers

Answered by drwls
Both cot x and tan x must either be 1 or -1, since tan x = 1/cot x

tan^2 x = 1
tan x = +/-1
tan 1 = 1 at 45 and 225 degrees. tan x = -1 at 135 and 315 degrees.
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