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vivado [14]
3 years ago
10

Q25 A train travelling at a speed of 30km/h crosses a bridge 25m long in 12 sec. How long will it take to overtake a another tra

in 25m long travelling at 20km/hr? ​option given 1. 72 sec 2. 74 sec 3. ,75 sec or data insufficient.
Mathematics
1 answer:
Makovka662 [10]3 years ago
8 0

Answer:

WHAT

Step-by-step explanation:

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Help please with question 5-8, show the solution
ludmilkaskok [199]

For each of these problems, remember SOH-CAH-TOA.

Sine = opposite/hypotenuse

Cosine = adjacent/hypotenuse

Tangent = opposite/adjacent

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6) We have an unknown side length, of which is adjacent to 22 degrees, and the length of the hypotenuse. Since we know the adjacent side and the hypotenuse, we should use Cosine. Therefore, our equation to find the missing side length is cos(22) = x / 15.

7) When finding an angle, we always use the inverse of the trigonometry function we originally used. Therefore, if sin(A) = 12/15, then the inverse of that would be sin^-1 (12/15) = A.

8) We are again using an inverse trigonometry function here. We know the hypotenuse, as well as the side adjacent to the angle. Therefore, we should use the inverse cosine function. Using the inverse cosine function gives us cos^-1 (9/13) = 46 degrees.

Hope this helps!

8 0
3 years ago
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Neko [114]
The answer would be B. 
8 0
3 years ago
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In which of the following intervals does the trigonometric inequality csc(x)> -sec(x) always hold true?
Kaylis [27]
Answer:a is the answer
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densk [106]

Answer:

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Step-by-step explanation:

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d = 13 cm

The radius is 1/2 of the diameter

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4 0
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Answer:

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Step-by-step explanation:

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