# Simplify equation

Hi,

I'm trying to simplify the following equation, but I'm not sure it can be! Can anybody help me please?

$$\frac{sin(\alpha + \delta \alpha)} {sin(\beta + \delta \beta - \alpha - \delta \alpha)} - \frac{sin(\alpha)} {sin(\beta - \alpha)}$$

berkeman
Mentor
Hi,

I'm trying to simplify the following equation, but I'm not sure it can be! Can anybody help me please?

$$\frac{sin(\alpha + \delta \alpha)} {sin(\beta + \delta \beta - \alpha - \delta \alpha)} - \frac{sin(\alpha)} {sin(\beta - \alpha)}$$

That's not an equation (no equal sign), it is an expression. What is the full equation?

What is the context of the question? Is it for schoolwork, or for a physical problem?

That's not an equation (no equal sign), it is an expression. What is the full equation?

What is the context of the question? Is it for schoolwork, or for a physical problem?

Oke, the full equation is
$$\epsilon = \frac{sin(\alpha + \delta \alpha)} {sin(\beta + \delta \beta - \alpha - \delta \alpha)} - \frac{sin(\alpha)} {sin(\beta - \alpha)}$$

It is for an error analyses of a physical problem!

Thanks

I like Serena
Homework Helper
Welcome to PF, hermano!

Let's define $f(x) = {\sin(\alpha x) \over sin(\gamma x)}$.
Do you know what the definition of f'(1) is?