The value range of X when TaNx = 0

The value range of X when TaNx = 0


x = 0,±∏,±2∏,±3∏,.



In (0,2 π), the value range of X which makes TaNx > 1 hold is


In (0,2 π), the value range of X which makes TaNx > 1 hold is
π/4



The value range of tanx-1 ≥ 0 is


∏/4+k∏≤x