sin cos tan

(sin radians) (cos radians) (tan radians)

The three basic trigonometric functions, each taking an angle in radians and returning a float. sin is the sine, cos the cosine, and tan the tangent. The interpreter and JVM backends compute them with Math.sin/Math.cos/Math.tan; the WASM backend uses a software approximation (Cody-Waite argument reduction over quarter-turn quadrants plus Taylor polynomials), so its result may differ slightly in the least significant digits, and for very large arguments (beyond about 2^30) it progressively loses precision where the JVM stays exact. The zero and quadrant anchors are exact everywhere: (sin 0) is 0.0, (cos 0) is 1.0, (sin (/ pi 2)) is 1.0, (cos pi) is -1.0. NaN and infinite arguments give NaN on every backend.