Jawabanmu

2014-07-22T23:43:17+07:00
Sin 30 = 1/2
sin 45 = √2/2
sin 210 = 1/2
sin 270 = 1

cos 30 = √3/2
cos 45 = √2/2
cos 210 = √3/2
cos 270 = 0

tan 30 = 1/ √3
tan 45 = 1
tan 210 = 1/√3
tan 270 = (tak terhingga)

smoga benar, maaf kalo salah x_x
2014-07-23T00:54:21+07:00
Sin 30 =1/2
sin 45 =1/2 x √2
sin (180 +30)= -1/2 ⇒di kuadran ke 3
sin (360-90) = -1 ⇒ di kuadran ke 4

cos 30 =1/2 x √3
cos 45 = 1/2 x √2
cos (180+30) = -1/2 x √3 ⇒di kuadran ke 3
cos (360-90)=0

tan 30 =1/√3
tan 45 = 1
tan (180+30)=1/√3 ⇒ di kuadran ke 3
tan ( 360-90)= -≈