PI TIMES (_) o.y yields pi times y. For example, o. 1 is approximately 3.14159.
CIRCLE (0 0) If k>:0, then k o.y yields one of the circular, hyperbolic, or pythagorean functions, according to the following table:
k Function k Function
0 %:1ΓÇôy^2 7 Tanh y
1 Sine y 8 %:ΓÇô>:y^2
2 Cosine y 9 (y++y)%2
3 Tangent y 10 |y
4 %:1+y^2 11 (yΓÇô+y)%0j2
5 Sinh y 12 (^.*y)%0j1
6 Cosh y
(-k)o.y is inverse to k o.y. The cases _1, _4, _9, and _10 are Arcsine y and %:<:y^2 and y and +y. The arguments of sin, cos, and tan (and the results of their inverses) are in radians.