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2a=4/3
sin 4/3 = 0,0232
tan=depan/samping
sisi miring=??
c²=2²+3²
c=√4+9
c=√13
sinA=2/√13
sinA=2/√13 x √13/√13 =2√13/13 ⇒penyebut dirasionalkan
2sinA=
2 (2√13) = 4√13/13
13