Pertanyaan

Jika nilai sin α = 9 5 , maka nilai cos α adalah..

Jika nilai $sin α = \frac{5}{9}$ , maka nilai $cos α$ adalah..

$fraction numerator 3 square root of 14 over denominator 9 end fraction$
$fraction numerator 2 square root of 14 over denominator 9 end fraction$
$fraction numerator square root of 14 over denominator 9 end fraction$
$fraction numerator 2 square root of 7 over denominator 9 end fraction$
$fraction numerator square root of 7 over denominator 9 end fraction$

H. Nufus

Master Teacher

Mahasiswa/Alumni Universitas Negeri Surabaya

Jawaban terverifikasi

Pembahasan

$BC equals square root of AC squared minus AB squared end root equals square root of 9 squared minus 5 squared end root equals square root of 81 minus 25 end root equals square root of 56 space equals space square root of 4 straight x 14 end root space equals space 2 square root of 14 cosα equals BC over AC equals fraction numerator 2 square root of 14 over denominator 9 end fraction$

Latihan Bab

Konsep Kilat

Derajat dan Radian

Perbandingan Sisi (Trigonometri)

Sudut Istimewa (Trigonometri)