Penjelasan dengan langkah-langkah:
ab = 4
bc = 3
cari ac
= √ab² + bc²
= √(4² + 3²)
= √(16 + 9)
= √25
= 5
2 cos a - sin c
= 2 . (ab/ac) - (ab/ac)
= 2(3/5) - (3/5)
= 6/5 - 3/5
= 3/5
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Penjelasan dengan langkah-langkah:
ab = 4
bc = 3
cari ac
= √ab² + bc²
= √(4² + 3²)
= √(16 + 9)
= √25
= 5
2 cos a - sin c
= 2 . (ab/ac) - (ab/ac)
= 2(3/5) - (3/5)
= 6/5 - 3/5
= 3/5