Please butuhh buat tugas hari inii
Matematika
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Pertanyaan
Please butuhh buat tugas hari inii
1 Jawaban
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1. Jawaban whongaliem
sin G = 15/17
sin² G + cos² G = 1
(15/17)² + cos² G = 1
225 / 289 + cos² G = 1
cos² G = 1 - 225/289
cos² G = 64/289
cos G = √(64/289)
cos G = - 8 / 17 atau cos G = 8/17
karena G di kuadran II ⇒ cos G = - 8/17
tan H = 12/13 ⇒ cotan H = 1/tan H
= 1 / (12/13)
= 13/12
cotan² H + 1 = 1/sin² H
(13/12)² + 1 = 1 / sin² H
169/144 + 1 = 1/sin² H
313 / 144 = 1/sin² H
sin² H = 144/313
sin H = √(144/313)
sin H = - (12/313)√313 (krn H di kuadran III)
cos G + sin H = - 8/17 - (12/313)√313