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Function References
Reference for all built-in functions
Functions
A
acos

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acos

Syntax

acos(X)

Parameters

X is a scalar/vector/matrix/table.

Details

The inverse cosine function.

DolphinDB acos and TA-Lib ACOS are mathematically identical in semantic meaning. The difference is that TA-Lib’s ACOS is a Math Transform function whose inputs and outputs are primarily one-dimensional arrays, whereas DolphinDB’s acos can operate on scalars, vectors, matrices, or tables, and preserves the structure of the input data.

Examples

acos(1.000000 0.540302 -0.416147);
// output: [0,1,2]

Related functions: asin, atan, sin, cos, tan, asinh, acosh, atanh, sinh, cosh, tanh