Question

Solve w=va/r^2+a^2 for a

Answer 1

The given equation is

`w=(va)/(r^2+a^2)`

We need to solve it for a

let us cross multiply the two sides

`w(r^2+a^2)=va`

Divide both sides by w

`r^2+a^2=(va)/(w)`

Subtract r^2 from both sides

`a^2=(va)/(w)-r^2`