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10
Diketahui : = 300
1
= 5
1
= 10
2
Ditanya : … ?
2
Penyelesaian : = .
= sin → 90°
sin 90° = 1, =
=
2
1
=
1 1
2 2
1 1
= 2
2
300 .5
= 10 = 150 (E)
2
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