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8 February, 08:41

Solve

tan x + 1 = 0

for x.

+2
Answers (1)
  1. 8 February, 11:33
    0
    Tan x + 1 = 0

    tan x + 1 - 1 = 0 - 1

    tan x = - 1

    We will use the unit circle:

    tan ( - 45°) = - 1

    tan ( - π / 4) = - 1

    Answer:

    x = - π / 4 + n π, n ∈ Z
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