Tolong bantu no 5 dan 6 pakai cara nya

6. sin 150° = 1/2
sin 120° = 1/2 akar 3
cos 120° = 1/2
cos 300° = 1/2

=( 1/2 + 1/2 akar 3 ) / (1/2 - 1/2)
=( 1/2 + 1/2 akar 3) / 1
= 1/2 +1/2 akar 3
= 1/2 ( 1 + akar 3 )
jawabannya B

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