Oblicz wartosc wyrazenia student: sin2(arccos(3/5))

kochanus_niepospolitus: arccos(3/5) = arcsin(2/5) sin2α = 2sinα*cosα sin(2arccos(3/5)) = 2sin(arccos3/5)*cos(arccos(3/5) = = 2sin(arcsin3/5)*cos(arccos(3/5) = ...