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Darya [45]
4 years ago
13

A ship has a 15-foot-tall mast with a 37.13-foot-long rope that is strung from the top of the mast to the ship's deck. What is t

he angle of elevation to the top of the mast?
Mathematics
1 answer:
notsponge [240]4 years ago
4 0

Answer:

The angle of elevation to the top of the mast is 23.82°

Step-by-step explanation:

Given as :

The length of the rope = 37.13 foot

The length of the mast = 15 foot

Let the angle of elevation to the top of the mast = Ф

So, Sin angle = \dfrac{\textrm perpendicular}{\testrm hypotenuse}

Or, Sin Ф = \dfrac{\textrm length of mast}{\testrm length of rope}

or, Sin Ф = \dfrac{\textrm 15}{\testrm 37.13}

or , Sin Ф = 0.40398

∴ Ф = Sin^{-1} 0.40398

or, Ф = 23.82°

Hence The angle of elevation to the top of the mast is 23.82°  Answer

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mario62 [17]

Answer:

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Step-by-step explanation:

The n th term of an AP is

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Given a₇ = 2a₅ , then

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- a₁ - 2d = 0 → (1)

The sum to n terms of an AP is

S_{n} = \frac{n}{2} [ 2a₁ + (n - 1)d ]

Given S_{7} = 84 , then

\frac{7}{2} (2a₁ + 6d) = 84

3.5(2a₁ + 6d) = 84 ( divide both sides by 3.5 )

2a₁ + 6d = 24 → (2)

Thus we have 2 equations

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2a₁ + 6d = 24 → (2)

Multiplying (1) by 3 and adding to (2) will eliminate d

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nlexa [21]

Answer:

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Step-by-step explanation:

Consider the provided information.

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