Pertanyaan

Jika diketahui x = 3 4 π , maka nilai dari cos x − 3 1 sin x adalah...

Jika diketahui $x = \frac{4 π}{3}$ , maka nilai dari $cos x - \frac{1}{3} sin x$ adalah...

Ikuti Tryout SNBT & Menangkan E-Wallet 100rb

Habis dalam

Klaim

R. RGFLSATU

Master Teacher

Jawaban terverifikasi

Pembahasan

$cos space x minus fraction numerator 1 over denominator square root of 3 end fraction sin space x equals cos fraction numerator 4 straight pi over denominator 3 end fraction minus fraction numerator 1 over denominator square root of 3 end fraction sin space fraction numerator 4 straight pi over denominator 3 end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals negative 1 half minus fraction numerator 1 over denominator square root of 3 end fraction open parentheses negative fraction numerator square root of 3 over denominator 2 end fraction close parentheses space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals negative 1 half plus 1 half space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 0$