
Penjumlahan dan Selisih Sudut

Quiz
•
Mathematics
•
11th Grade
•
Hard
Fitria Rahayuningsih
Used 1+ times
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hitunglah sin(30° + 45°).
(√2 - √6)/4
(√2 + √2)/4
(√3 + √5)/4
(√2 + √6)/4
Answer explanation
Untuk menghitung sin(30° + 45°), kita gunakan rumus sin(a + b) = sin(a)cos(b) + cos(a)sin(b). Dengan a = 30° dan b = 45°, hasilnya adalah (√2 + √6)/4, yang merupakan pilihan yang benar.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa nilai cos(60° - 30°)?
√3/2
0
1/2
√2/2
Answer explanation
Untuk menghitung cos(60° - 30°), kita gunakan rumus cos(a - b) = cos(a)cos(b) + sin(a)sin(b). Dengan a = 60° dan b = 30°, hasilnya adalah cos(60°)cos(30°) + sin(60°)sin(30°) = (1/2)(√3/2) + (√3/2)(1/2) = √3/2.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tentukan nilai tan(15° + 75°).
tak terhingga
1
tan(90°)
0
Answer explanation
tan(15° + 75°) = tan(90°). Karena tan(90°) tidak terdefinisi, nilainya dianggap tak terhingga. Jadi, jawaban yang benar adalah 'tak terhingga'.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hitunglah sin(90° - 45°).
0.7071
0.5
0.866
1.0
Answer explanation
Untuk menghitung sin(90° - 45°), kita gunakan identitas trigonometri sin(90° - x) = cos(x). Jadi, sin(90° - 45°) = cos(45°) = 0.7071. Pilihan yang benar adalah 0.7071.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa nilai cos(90° - 60°)?
√3/2
0
√2/2
1/2
Answer explanation
Nilai cos(90° - 60°) dapat dihitung menggunakan identitas trigonometri cos(90° - x) = sin(x). Jadi, cos(30°) = sin(60°) = √3/2. Maka, jawaban yang benar adalah √3/2.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tentukan nilai tan(45° - 30°).
1
√3
2 - √3
2 + √3
Answer explanation
Untuk menghitung tan(45° - 30°), kita gunakan rumus tan(a - b) = (tan a - tan b) / (1 + tan a * tan b). Dengan tan 45° = 1 dan tan 30° = 1/√3, kita dapatkan hasilnya 2 - √3. Jadi, jawaban yang benar adalah 2 - √3.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hitunglah sin(60° + 30°).
1/2
√3/2
√2/2
√3
Answer explanation
Untuk menghitung sin(60° + 30°), kita gunakan rumus penjumlahan sudut: sin(A + B) = sin(A)cos(B) + cos(A)sin(B). Dengan A = 60° dan B = 30°, hasilnya adalah √3/2, yang merupakan pilihan yang benar.
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa nilai cos(120° - 60°)?
0.5
1.0
-0.5
0.25
Answer explanation
Untuk menghitung cos(120° - 60°), kita gunakan identitas sudut: cos(60°) = 0.5. Jadi, nilai cos(120° - 60°) adalah 0.5, yang merupakan pilihan yang benar.
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