Y=(4x-1)cosx/sinx=(4x-1)*cat

Question

Y=(4x-1)cosx/sinx=(4x-1)*cat

Answer 1

(4x-1)cat = act(4x-1)

(4x-1)*cosx   

     sinx         = act*(4x-1)

(4x-1)*cosx 

     sinx        = 4actx-act

4x=1

x=¼