add trigonometric codes

docs/ops.markdown

@@ -139,6 +139,38 @@ Return the value of $base raised to $exponent;
 *  `sqrt_n(num $l, num $r)`
 *  `sqrt_I(Any $l, Any $r)`
 
+# Trigonometric Opcodes
+
+Each opcode corresponds directly to the trigonmetric function of the same
+name. `h` indicates a hyperbolic variant.
+
+## asec
+*  `asec_n(num $n)`
+## asin
+*  `asin_n(num $n)`
+## acos
+*  `acos_n(num $n)`
+## atan
+*  `atan_n(num $n)`
+## atan2
+*  `atan2_n(num $l, num $r)`
+## cos
+*  `cos_n(num $n)`
+## cosh
+*  `cosh_n(num $n)`
+## sin
+*  `sin_n(num $n)`
+## sinh
+*  `sinh_n(num $n)`
+## sec
+*  `sec_n(num $n)`
+## sech
+*  `sech_n(num $n)`
+## tan
+*  `tan_n(num $n)`
+## tanh
+*  `tanh_n(num $n)`
+
 # String Opcodes
 
 ## radix