cosec a
Cari sisi miring (BC)
BC² = AC² + AB²
BC² = 4² + 3²
BC² = 16 + 9
BC² = 25
BC = √25
BC = 5
Selanjutnya cari cosec a
cosec a = sisi miring/sisi depan
cosec a = BC/AC
cosea a = 5/4
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Ditanya
cosec a
Penyelesaian
Cari sisi miring (BC)
BC² = AC² + AB²
BC² = 4² + 3²
BC² = 16 + 9
BC² = 25
BC = √25
BC = 5
Selanjutnya cari cosec a
cosec a = sisi miring/sisi depan
cosec a = BC/AC
cosea a = 5/4