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**arcCos**- Answer the arc-cosine of the receiver
**arcSin**- Answer the arc-sine of the receiver
**arcTan**- Answer the arc-tangent of the receiver
**ceiling**- Answer the integer part of the receiver, truncated towards +infinity
**cos**- Answer the cosine of the receiver
**exp**- Answer 'e' (2.718281828459...) raised to the receiver
**floor**- Answer the integer part of the receiver, truncated towards -infinity
**ln**- Answer the logarithm of the receiver in base 'e' (2.718281828459...)
**primHash**- Private - Answer an hash value for the receiver
**raisedTo: aNumber**- Answer the receiver raised to its aNumber power
**sin**- Answer the sine of the receiver
**sqrt**- Answer the square root of the receiver
**tan**- Answer the tangent of the receiver