If tan = x/y, x > 0, y > 0, and 0 < < /2,
Question:
If tan α = x/y, x > 0, y > 0, and 0 < α < π/2, then what is cos α?
F. √x2 + y2/y
G. y/√x2 + y2
H. x/√x2 + y2
J. y/x
K. x/y
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