~~NOTOC~~
<=[[4rpl:start| Index]] \\
<= [[4rpl:start#Math]]  

====== asin ======
asin(<-one) ->halfPie

===== Description =====
Calculates the arcsine of the input, returns result angle in radiants.

===== Examples =====
<code 4rpl>
trace(asin(1)) #prints PI/2
</code>
<=[[4rpl:start| Index]]