MY CALCULATOR

Algebra & Logs

(a+b)² a²+2ab+b²
a²-b² (a-b)(a+b)
log(xy) log x + log y
log(x/y) log x - log y

Geometry

Circle Area πr²
Circumf. 2πr
Sphere Vol. 4/3πr³
Pythagoras a²+b²=c²

Trigonometry

Identity sin²θ+cos²θ=1
tan θ sinθ/cosθ
cot θ 1/tanθ

Physics Constants

Gravity 9.81 m/s²
Light Spd ~3×10⁸ m/s
Planck 6.626×10⁻³⁴