If Sine (x) = two-fifths and tan(x) > 0, what is sin(2x)?
StartFraction 2 StartRoot 21 EndRoot Over 25 EndFraction
StartFraction 4 StartRoot 21 EndRoot Over 25 EndFraction
StartFraction 2 StartRoot 21 EndRoot Over 5 EndFraction
StartFraction 4 StartRoot 21 EndRoot Over 5 EndFraction