Jawabanmu

2014-03-24T09:44:26+07:00
sin \theta  =  \frac{3}{4}
sin \theta = \frac{depan}{miring} , cos \theta = \frac{samping}{miring}   , tan \theta = \frac{depan}{samping}

berarti :
depan = 3
miring = 4
samping =  \sqrt{7} (gunakan rumus pitagoras)

cos \theta = \frac{samping}{miring}
cos \theta = \frac{ \sqrt{7} }{4}

tan \theta = \frac{depan}{samping}
tan \theta = \frac{3}{ \sqrt{7}}
tan \theta = \frac{3}{ \sqrt{7}} .  \frac{ \sqrt{7} }{ \sqrt{7}}
tan \theta = \frac{3}{7}  \sqrt{7}

semoga membantu :)