Jawabanmu

2014-06-15T14:25:16+07:00
1.)cos 405    = cos (1.360 +α)
               = cos (360 + 45)
               = cos 45
               = 1/2√2
2.) kalo nggak salah ada 24
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2014-06-15T14:27:56+07:00
1. cos 405° = cos (405°- 360°) = cos 45° = 1/2 akar 2

2. ruang sampel = 2x2x6 = 24
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