Nilai dari tan 600 - sin 900 +cos 390 =... Please jawab

tan 600 = tan (360+240) = tan 240
= tan (180+60) = tan 60 = √3
sin 900 = sin (2.360 + 180) = sin 180 = 0
cos 390 = cos (360 + 30) = cos 30 = √3/2

√3 - 0 + √3/2
= √3 + √3/2
= 2√3/2 + √3/2
= 3√3 / 2
= (3/2) √3