Solve the following equation : 2tanx-cotx = -1
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2 tan x - cot x = - 1
2 tan x - 1 / tan x = -1
2 tan² x - 1 + tan x = 0
quadratic equation -- solving that..
tan x = (-1 +- 3)/4 = 1/2 or -1
x = - 45 deg. or 135 deg = - π/4 or 3π/4
tan x = 1/2 =>
x = tan⁻¹ 1/2
2 tan x - 1 / tan x = -1
2 tan² x - 1 + tan x = 0
quadratic equation -- solving that..
tan x = (-1 +- 3)/4 = 1/2 or -1
x = - 45 deg. or 135 deg = - π/4 or 3π/4
tan x = 1/2 =>
x = tan⁻¹ 1/2
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