4 years ago

WE NEED ANSWERS HELP US!!!!

Mathematics

2 answers:

IgorLugansk [536]4 years ago

5 0

It's the second one. She did not find the reciprocal before multiplying

larisa [96]4 years ago

4 0

The answer is the second one. She did not find the reciprocal first

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12. Use a trigonometric ratio to find the measure of O in the triangle below. Give your answer to the nearest degree.

larisa [96]

Given :-

A right angled triangle with two sides 10cm and 9cm .

To Find :-

The value of theta .

Solution :-

At angle theta , 9cm side will be considered as the perpendicular and 10cm side will be hypotenuse . So , as we know that ;

$\longrightarrow sin\theta =\dfrac{perpendicular}{hypotenuse}$

Substituting the respective values,

$\longrightarrow sin\theta =\dfrac{9cm}{10cm}$

Simplify,

$\longrightarrow sin\theta= 0.9$

Take arcsin both sides ,

$\longrightarrow \theta =sin^{-1}(0.9)$

$\\\longrightarrow\underline{\underline{\theta = 64.15^o }}$

Hence the required answer is 64.15° . 

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3 years ago

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Step-by-step explanation:

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dusya [7]

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alisha [4.7K]

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Rom4ik [11]

The answer is 15 square ft

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