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## Homework Statement

I can't find way to solve [tex]\frac{Sin25 * Sin65}{Cos 40}[/tex]

## Homework Equations

## The Attempt at a Solution

I looked trough allformulas i have I came up with:

[tex]\frac{Sin25 * Sin65}{Cos 40} = \frac{Sin25 * Cos25}{Cos 40}[/tex]

But then found that formula is:

[tex]Sin 2a =2{Sina * Cosa}[/tex]

Which means what i tried above doesn't work.