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Ayo Mulai
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Jarak titi, garis dan bidang dalm ruang...Dengan aturan cosinus maka ( ) ( ) ( ) ( )( ) 13 4 1 sin 3 4 1 cos 48 3 36 cos 55 27 64 48 cos 55 3 3 82 2 3 3 8 cos 2 2 = = = = + − = +
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