100 Facts Sharks- Marine Biology, Educational Projects, Fun Activities, Quizzes and More!

100 Facts Sharks- Marine Biology, Educational Projects, Fun Activities, Quizzes and More!

Matematika diketahui sin a =12/13 Dan tan a bernilai positive. nilai cos a =​

diketahui sin a =12/13 Dan tan a bernilai positive. nilai cos a =​ cos a = 5/13

5 didapat dari akar 13 kuadrat - 12 kuadrat

Jawaban:

cos a = 5/13

Dapetin 5 nya :

x² = 13² - 12²

= 169 - 144

x = √25

= 5

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