Question 1199491
.


These equations are not algebraic equations: they are transcendental equations 
and can not be solved algebraically.


They can be solved numerically by getting approximate solution/solutions.


There are many methods to solve it and many sites in the Internet, where you can 
find and use free of charge solvers.


For example, go to web-site 

https://mathworld.wolfram.com/TranscendentalEquation.html

and use free of charge solver there.



You will get your answers quickly.



Happy exercises (!)