Evaluate lim x→π/4 (sec²x - 2)/(tanx - 1)

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lim x→π/4 (sec²x - 2)/(tanx - 1)
lim x tends to pi 4 sec2x-2/tanx-1
lim x→π/4 (sec2 x - 2)/(tan x - 1)
limit X tends π/4 (sec^2x-2) / (tanx-1)
Evaluate the limit lim x-pi/4 (sec2x -2) /(tanx-1)
#math #calculus
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