Quick Help
• Mode toggles angles: DEG or RAD. Functions sin, cos, tan, asin, acos, atan respect this.
• Use x**y or the x^y key for powers.
• log(x) is base‑10, ln(x) is natural log.
• n! uses fact(n) (wraps automatically if you type fact(5)).
• Constants: π = 3.14159…, e = 2.71828…