Answer is 0.6 ,5.6

Oh ya, forgot to reject the two solutions. We must sub back to check the situation since the output of a modulus must also be positive.

First and fourth quadrant ?

Forced to be the first and the fourth quadrants since cos x has to come out as a positive value, so from the sine equation containing all four quadrants, we pick only the first and fourth quadrants.

Because cos x is negative in the second and third quadrants and |Tan x| = negative number has no solution.