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Mathwords: Inverse Tangent

Inverse Tangent tan-1 Tan-1 arctan Arctan The inverse function of tangent. Basic idea: To find tan-1 1, we ask "what angle has tangent equal to 1?" The answer is 45 . As a result we say that tan-1 1 = 45 . In radians this is tan-1 1 = π/4....

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