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AnnyKZ [126]
3 years ago
13

An oak tree, elm tree, and maple tree are standing in a park. The three trees are non-collinear. If the oak is 2 feet from the e

lm, the elm is 10 feet from the maple and the oak is 4 feet from the maple, do these three trees form a triangle?
Mathematics
1 answer:
crimeas [40]3 years ago
6 0
No they do not form a triangle because 2×2=4 and 4×4=16 16+4=20 it must equal 10 to form a triangle
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Answer:

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Step-by-step explanation:

The given function is

\sec x=-\frac{2\sqrt{3} }{3},\:\:for\:\:\frac{\pi}{2}\le x \le \pi

Recall that the reciprocal of the cosine ratio is the secant ratio.

This implies that;

\frac{1}{\cos x}=-\frac{2\sqrt{3} }{3}

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\Rightarrow \cos x=-\frac{\sqrt{3}}{2}

We take the inverse cosine of both sides to obtain;

x=\cos^{-1}(-\frac{\sqrt{3}}{2})

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