- #1

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## Homework Statement

Show that (sin(2theta) - sin(theta)) / (cos(2theta) - cos(theta) + 1) = tan(theta)

sorry if this setting out is unclear but i am not familiar with how to post math symbols and such.

## Homework Equations

above

## The Attempt at a Solution

I have tried simplifying using double angle formulae but it seems i am going backwards instead of forwards. This is really frustrating as it seems to be quite simple but when I try to solve, i get nowhere.

Thanks.