# Help me to solve this equation pls

1. Aug 25, 2010

### asanka000

1. The problem statement, all variables and given/known data

i want to find the beta of this equation. i mean beta in one side and all other things next side. it is ok even if you provide the final answer without calculations.

2. Relevant equations

-2R*sin($$\beta$$/2)*cos(K-$$\beta$$/2)/sin(K+$$\beta$$)=d

3. The attempt at a solution

2. Aug 25, 2010

### kuruman

What have you tried so far?

I suggest that you first expand cos(k-β/2) and sin(k+β) and then use the half-angle trig identities to get rid of β/2 in favor of β.

3. Aug 25, 2010