I have an identily of the form:
cos(a1 – b)/cos(a2 – b) =(x1/x2)*cos(a1)/cos(a2)
Given a1,a2,x1 and x2, how can I solve it for b?
Thanks in advance for any help
Hello jrr
Welcome to Math Help Forum!It's not clear what the symbols are between the and the brackets, so I shall ignore them for now. (If it turns out to be a power, like the same method applies.)
Expand each of the cosine expressions on the LHS using , and then divide top and bottom by . Then solve the resulting equation for .
Here's the start:Can you now make the subject of this equation, and hence find ?
Grandad