Math
Scientific Calculator
Trig, logarithms, exponents, and inverse functions.
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Trig Values (Degrees)
| Angle | sin | cos | tan |
|---|---|---|---|
| 0° | 0 | 1 | 0 |
| 30° | ½ | √3/2 | 1/√3 |
| 45° | √2/2 | √2/2 | 1 |
| 60° | √3/2 | ½ | √3 |
| 90° | 1 | 0 | ∞ |
| 120° | √3/2 | −½ | −√3 |
| 180° | 0 | −1 | 0 |
| 270° | −1 | 0 | ∞ |
| 360° | 0 | 1 | 0 |
Logarithm Rules
Product
log(a·b) = log a + log b
Quotient
log(a/b) = log a − log b
Power
log(aⁿ) = n · log a
Change base
logₙ(x) = ln x / ln n
ln and e
ln(eˣ) = x eˡⁿ⁽ˣ⁾ = x
log and 10
log(10ⁿ) = n 10ˡᵒᵍˣ = x
Mathematical Constants
π
Ratio of circumference to diameter
3.14159265358979…
e
Base of natural logarithm
2.71828182845904…
√2
Diagonal of unit square
1.41421356237309…
φ
Golden ratio (1+√5)/2
1.61803398874989…