TAN

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Returns the tangent of an angle in radians.

Signatures

Returns: Tangent value

TAN(radians: T) → DOUBLE

Notes

• Input angle must be in radians (use RADIANS() to convert from degrees)
• Definition: TAN(x) = SIN(x) / COS(x)
• TAN(0) = 0, TAN(π/4) = 1, TAN(π) = 0
• Undefined (infinite) at odd multiples of π/2
• Period of π: TAN(x) = TAN(x + π)
• Odd function: TAN(-x) = -TAN(x)
• Returns NULL if input is NULL

Examples

SELECT
    f1 := TAN(0e0),  -- Tangent of 0 radians is 0
    f2 := TAN(0.7853981633974483e0),  -- Tangent of π/4 radians is ~1
    f3 := TAN(0.5235987755982988e0),  -- Tangent of π/6 radians
    f4 := TAN(-0.7853981633974483e0)  -- Odd function: TAN(-π/4) = -TAN(π/4)
;