nilai dari cos 240° + tan 135° - sin 330° = ...?

cos 240° =-1/2
tan 135° = -1
sin 330° = -1/2

cos 240° + tan 135° - sin 330° =
-1/2 + (-1 )- (-1/2) =
-1/2-1+1/2 = -1

maaf jika salah

cos 240 = -1/2
tan 135 = -1
sin 330 = -1/2

-1/2 + (-1) - (-1/2) = -4/2 = -2