Simlify a function in matlab

Hi,

there is an equation:

cos(x) + B*sin(x) = C

and also an expression:

-sin(x) + B*cos(x)

I want to know if we can rewirte the expression in a way to omit "x". I could't do it manually. I wanted to know if there is any way in Matlab.

Thanks

[Benjamin Thompson]

So you want to solve the equation for 'x'?

[Mtnkh]

Yes!

Answer 1

[Walter Roberson]

syms B C x
eqn = cos(x) + B*sin(x) == C

eqn = 

expr = -sin(x) + B*cos(x)

expr = 

xsol = solve(eqn,x)

xsol = 

newexpr = simplify(subs(expr, x, xsol))

newexpr = 

[Walter Roberson]

Two solutions.