Question

Hitunglah nilai dari
A. Sec 150°
B. Tan 300°
c. Cos 330°
d. Sin 210°

Answer 1

Tan 300 = - tan (360-60) = - tan 60 = - akar 3
cos 330 = cos (360 -30) = cos 30 = 1/2 akar 3
sin 210 = -sin ( 180 +30) = -sin 30 = -1/2