# Doubt on ordered triplets

Let us say that u get solutions as -

tanx = something1

cosy = something2

sinz = something3

Since they explicitly say that there are solutions in 0-2pi, we know that there exists real solutions for the above 3 equations. Now, there will be atleast 2 solutions for tanx, cosy and sinz in 0-2pi. So 2x2x2 combinations means n should be atleast 8.