
Trigonometry and Average Problems
Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Practice Problem
•
Hard
SYAEFUL BAHRI
Used 1+ times
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jumlah tiga buah bilangan adalah 75. Bilangan pertama lima lebihnya dari jumlah bilangan lain. Bilangan kedua sama dengan 1/4 dari jumlah bilangan yang lain. Bilangan pertamanya adalah ....
15
20
30
35
40
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada segitiga ABC diketahui, jumlah sisi a + b = 18 cm, a + c = 25 cm, dan b + c = 17 cm. Luas segitiga tersebut adalah ...cm².
60
48
36
30
27
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dalam perhitungan trigonometri, penggunaan sudut referensi 180° atau 360° lebih disukai dibandingkan 90° atau 270° karena ....
Hasilnya selalu positif.
Tidak perlu mengubah jenis fungsi trigonometri (misalnya, sinus tetap sinus).
Lebih mudah dihitung secara mental.
Hanya berlaku untuk kuadran I dan IV.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nilai dari sin 240° + sin 225° + cos 315° adalah ....
-√3
-½√3
-½
½√3
√3/3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Umur rata-rata dari suatu kelompok yang terdiri atas guru dan dosen adalah 42 tahun. Jika umur rata-rata para guru 39 tahun dan umur rata-rata pada dosen 47 tahun, maka perbandingan banyaknya guru dan banyaknya dosen adalah ....
5 : 4
5 : 3
3 : 7
3 : 5
3 : 4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika rataan dari a-2, b+3, c+5 adalah 6, maka rataan dari a+4, b+6, c-1 adalah
5
6
7
8
9
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Domain dari fungsi f(x) = √(x/(2-x)) adalah
{x|0 ≤ x ≤ 2, x ∈ R}
{x|0 ≤ x < 2, x ∈ R}
{x|x ≤ 0 atau x > 2, x ∈ R}
{x|x ≤ 0 atau x ≥ 2, x ∈ R}
{x|x ≠ 2, x ∈ R}
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