Rearranging a trig expression in order to solve it

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Hi guys.. #i need some help here. I have 2 equations and i need them to be rearranged, i.e. essentially solved for beta and delta_beta. but i am not able to do it matlab and when i run the code for plotting it, i am not able to get a solution. any help is greatly appreciated. i am running against time here... the equations are :
1) beta = acos((((R^2-((R*u*sin(beta))/(R-d))^2)^0.5*(R-d))/(R*u))-(s_c/u));
2) acos((u*sin(delta_beta + beta))/R)) = asin((s-u*cos(delta_beta + beta))/R))
i.e., all i want is beta on one side and all the other variables on the other side and similarly, delta_beta on one side and all the other variables on the other side.... any help is greatly appreciated and thanks in advance.. !!!

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