Question

How do you solve `4sinx - 2sinx = 0`?

Answer 1

That's `sin x = 0` with solution `x = 180^circ k,`integer `k` or in radians `x=k pi.`

Explanation:

`4 sin x - 2 sin x = 0`

`2 sin x = 0`

`sin x = 0`

`x = 180^circ k, quad`integer `k`

In radians that's

`x=k pi, quad`integer `k`