diketahui sin α° = 4/5, cos β° = 7/25. sin α° cos β° + cos α° sin β° = ?
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diketahui sin α° = 4/5, cos β° = 7/25. sin α° cos β° + cos α° sin β° = ?
2 Jawaban
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1. Jawaban Wan98
sin α° = 4/5 maka cos α° = 3/5
cos β° = 7/25 maka sin β° = 24/25
nilai
sin α cos β + cos α sin β
= (4/5 × 7/25) + (3/5 × 24/25)
= 28/125 + 72/125
= 100/125
= 4/5 -
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