3 years ago

A scarf is a triangle with two perpendicular sides that are the same length.

Mathematics

1 answer:

Afina-wow [57]3 years ago

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Parallelogram and equilateral or regular

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2 years ago

If sine ⁡theta equals negative 8/17 and the terminal side of theta lies in quadrant IV, find cosine ⁡ theta .

Lelechka [254]

$\sin^2\theta+\cos^2\theta=1\implies \cos\theta=\pm\sqrt{1-\sin^2\theta}$

Since $\sin\theta=-\dfrac8{17}$ , it follows that

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where the sign depends on the location of the terminal side of the angle. Since the terminal side lies in the fourth quadrant, that means the cosine of the angle is positive, so

$\cos\theta=\dfrac{15}{17}$

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3 years ago

What is the answer to this----->7/8-5/6

dlinn [17]

7/8-5/6
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3 years ago

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prohojiy [21]

3n = 45 n= 15 super simple ;)

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3 years ago

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