6sin(150°) cos(150°) cos^2(30°)-sin(30°)

Sin 150°=0,5
cos 150°=-0.866025403786*sin 150°*cos 150°=-2.59807621135

cos^2 30°=0,75
sin 30°=0,5
cos^2 30°-sin 30°=-0,25

6*sin 150°*cos 150° / cos^2 30°-sin 30°=10.3923048454