Di kuadran II, hanya sin yang bernilai positif
sin A = √(1 - cos² A)
sin A = √(1 - (-4/5)²)
sin A = √(25/25 - 16/25)
sin A = √(9/25)
sin A = 3/5
2 . sin A . sec A
= 2 . 3/5 . 1/cos A
= 6/5 . 1/(-4/5)
= 6/5 . (-5/4)
= -6/4
= -3/2
Kelas 10
Pelajaran Matematika
Bab 6 Trigonometri Dasar
Kata kunci : -
Kode kategorisasi : 10.2.6
Internal link
brainly.co.id/tugas/16325934
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Verified answer
Di kuadran II, hanya sin yang bernilai positif
sin A = √(1 - cos² A)
sin A = √(1 - (-4/5)²)
sin A = √(25/25 - 16/25)
sin A = √(9/25)
sin A = 3/5
2 . sin A . sec A
= 2 . 3/5 . 1/cos A
= 6/5 . 1/(-4/5)
= 6/5 . (-5/4)
= -6/4
= -3/2
Kelas 10
Pelajaran Matematika
Bab 6 Trigonometri Dasar
Kata kunci : -
Kode kategorisasi : 10.2.6
Internal link
brainly.co.id/tugas/16325934
#backtoschoolcampaign