Math tools by Sergio Abreu

Dedicated to all students, nerds, geeks, curious people and Math lovers
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Trigonometry | The Rule of 3 | Numeric Bases | Geolocalization | Expressions | Julian date | XOR Cryptography

Electronics:

Parallel Resistor association | Capacitive reactance | Inductive reactance

Conversions

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Temperature Pressure Currency


77 


2.0689 
Length/Distance Weight/Mass


6.24 


22.05 

Trigonometry

Topo ⇑
Degrees (0 ~ 360)
Sen 0,866
Cos 0,500
Tan 1,732

Rule of 3 - Play on the white fields:

Topo ⇑
 
 
  10

Numeric Bases

Topo ⇑
Número
Dec 10
Bin 1010
Oct 12
Hex A
Computing
1 KiB = 1024 2^10
1 MiB = 1048576 2^20
1 GiB = 1073741824 2^30
1 TiB = 1099511627776 2^40

Expressions (javascript syntax)

Topo ⇑ Tip: The char ^ here means XOR operation. For power, use Math.pow( base, power )

F8 will select all 		Result:

Geolocalization

Topo ⇑
{ Graus Minutos Segundos } or { Decimal }

Julian date - Advanced numeric conversion

Topo ⇑

The astronomy time measure, counts the days and its fractions since January 1, 4713 BC Greenwich noon.
Choose one of the fields, follow the format while inputing.

Gregorian Date
Format: y-m-d h:min:seg		 Julian Date, only numbers and dot
Formats: 999999 or 99999.9999 		 

After Christ Before Christ
 

Basic XOR Cryptography

Topo ⇑
Original Key Cryptographed

 

Electronics

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Parallel Resistor association

Topo ⇑
Use only digits, DOT and optionally the letters K and M if needed
R1: Ω R2: Ω Result: Ω

Capacitive reactance

Topo ⇑
Freq: Hz Capacitor: Farad Z: Ω

Inductive reactance

Topo ⇑
Freq: Hz Inductor: Henry Z: Ω

 

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