cos(45°).cos (15°)-sin (45°).sin(15°)
Matematika
ariffin24
Pertanyaan
cos(45°).cos (15°)-sin (45°).sin(15°)
1 Jawaban
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1. Jawaban jisoo06
Cos(45).cos(15)-sin(45).sin(15)
= cos(45+15)
= cos60
= 1/2
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