Question

inverse trigonometry help -
solve for x -
1) 3 arc sin[( 2x)/(1+x^2)] - 4 arc cos[ (1-x^2)/(1+x^2)] + 2 arc tan[(2x)/ (1-x^2)] = pi /3;

2) arc tan[(x-1)/(x-2)] + arc tan [(x-1)/(x-2)] = pi/4;