Quiz Trigonometri Segitiga Siku-Siku
Quiz
•
Mathematics
•
10th Grade
•
Hard
Muhammad Taufiq
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
6 cm
Answer explanation
Tinggi tangga dapat dihitung dengan rumus: tinggi = c * sin(A). Dengan c = 10 cm dan A = 30°, sin(30°) = 0.5. Maka, tinggi = 10 * 0.5 = 5 cm. Jadi, jawaban yang benar adalah 5 cm.
2.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
1/2
Answer explanation
Diketahui \( \sin \theta = \frac{3}{5} \). Menggunakan identitas trigonometri \( \sin^2 \theta + \cos^2 \theta = 1 \), kita dapat menghitung \( \cos \theta = \sqrt{1 - \sin^2 \theta} = \sqrt{1 - \left(\frac{3}{5}\right)^2} = \frac{4}{5} \).
3.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
4.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Answer explanation
Diketahui \( \tan \alpha = 2 \), maka \( \frac{\text{opposite}}{\text{adjacent}} = 2 \). Misalkan sisi berlawanan = 2x dan sisi sejajar = x. Maka, \( \sin \alpha = \frac{\text{opposite}}{\text{hypotenuse}} = \frac{2x}{\sqrt{(2x)^2 + x^2}} = \frac{2}{\sqrt{5}} \).
5.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Answer explanation
Pada segitiga siku-siku dengan sudut B = 45°, sisi miring (hipotenusa) dapat dihitung dengan rumus: hipotenusa = sisi depan / sin(B). Dengan sisi depan = 7 cm dan sin(45°) = √2/2, maka hipotenusa = 7 / (√2/2) = 7√2 cm.
6.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Answer explanation
Pada segitiga siku-siku, berlaku hubungan $\sin^2 \theta + \cos^2 \theta = 1$. Dengan $\cos \theta = 0.6$, kita dapat menghitung $\sin \theta$ sebagai $\sin \theta = \sqrt{1 - 0.6^2} = \sqrt{0.64} = 0.8$.
7.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Answer explanation
Pada segitiga siku-siku, cosinus sudut θ dapat dihitung dengan rumus cos(θ) = sisi samping / sisi miring. Maka, cos(θ) = 9/15 = 0.6. Jadi, nilai cos(θ) adalah 0.6.
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