Which statements are true about the tangent function? Check all that apply
1. tan(∠PAB) = y/x
2.tan(∠APB) = x/y
3.tan(∠PAB) = sin(<PAB)/cos(<PAB)
4.tan(∠PAB) = cos(<PAB)/sin(<PAB)
5.tan(∠PAB) = PB/AB
