Nilai dari sec 330derajat

sec (360-30) = sec 30 = 2/3 akar 3

sec 330
sec = 1/cos

sec 330
= 1/cos 330
330 , kuadran IV , cos+ , maka sec+

cos 330
= cos (360 - 30)
= cos 30
= √3/2

1/ (√3/2)
= 2/√3
= 2/3 √3