7400120113

Submitted by michaela.bailova on Thu, 07/25/2024 - 16:57
Question: 
The distance between places B and C on opposite sides of a river is 20 meters. The measure of the angle α=∠ACB is 64∘. From the given expressions, select all that represent the width of the river:
Project ID: 
7400120113
SubArea: 
Sine, cosine, tangent and cotangent
Answer 1: 
20⋅sin⁡64∘
Answer 1 Correct: 
1
Answer 2: 
20⋅cos⁡⁡64∘
Answer 2 Correct: 
0
Answer 3: 
20⋅tg⁡64∘
Answer 3 Correct: 
0
Answer 4: 
20⋅cotg⁡64∘
Answer 4 Correct: 
0
Answer 5: 
20⋅cos⁡⁡26∘
Answer 5 Correct: 
1
Answer 6: 
20sin⁡⁡64∘
Answer 6 Correct: 
0
Answer 7: 
202−(20⋅cos⁡⁡64∘)2
Answer 7 Correct: 
1
Answer 8 Correct: 
0