ASIN

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Returns the arcsine (inverse sine) of a number in radians.

Syntax

ASIN(number: T) → DOUBLE

Type Parameters:

• T: Any numeric type (TINYINT, SMALLINT, INTEGER, BIGINT, FLOAT, DOUBLE, DECIMAL)

Arguments

Returns

DOUBLE - Arcsine in radians (between -π/2 and π/2)

Notes

• Input must be in the range [-1, 1]
• Returns values in the range [-π/2, π/2] radians
• ASIN(0) = 0, ASIN(1) = π/2, ASIN(-1) = -π/2
• Returns NULL if input is NULL
• Returns NaN for inputs outside [-1, 1]
• Inverse of SIN function: ASIN(SIN(x)) = x for x in [-π/2, π/2]

Examples