Share via Share via... Twitter LinkedIn Facebook Pinterest Telegram WhatsApp Yammer RedditPrintPermalink × Arc Sine asin( a ) Return the arc sine of a. Description asin( a ) Return the arc sine of a in radians. Parameters a Value [-1 to +1] Return value arc sine of a Example usage asin( 1 ) Returns 1.57079… (PI/2). ezeio2/expref/asin.txt Last modified: 2019-09-02 18:46by andreh Log In