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tan 60 x sin240
jawaban: sin 120=
cos 180= 0
tan 60=
sin 240=
jadi:
sin 120x sin 180= 1x 1/2akar3= 1/2 akar 3
tan60x sin 240= 1 akar 3 x 1/2 akar 3 =1/2 x 3 = 1 1/2
jadi:
-------------------------- =1/2 akar 3 : 1 1/2= .... (tinggal satu langkah) selesaikan... heheh....
1 1/2