nilai dari cos 30+ cosec 60

Cos 30 = (√3)/2
Coses 60 = 1/sin 60  = 1/(√3)/2 = 2/(√3) = 2(√3)/2

Cos 30 + Cosec 60 = (√3)/2 + 2(√3)/2
=3(√3)/2

Bab Trigonometri
Matematika SMA Kelas X

cos 30° + cosec 60°
= (1/2) √3 + (2/3) √3
= ((3 . 1 + 2 . 2)/(2 . 3)) x √3
= (7/6) √3