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pychu [463]
3 years ago
14

The line segment with endpoints (−20, 21) and (0, 0) is graphed on the standard coordinate plane and makes an angle, Θ, with res

pect to the x axis. What is cos Θ?

Mathematics
1 answer:
klemol [59]3 years ago
4 0
We have that
<span> points (−20, 21) and (0, 0)
Let 
A----> </span>(−20, 21)
B-----> (0, 0)

using a graph tool
see the attached figure

step 1

find the distance AB

<span>applying the Pythagorean theorem
</span>
AB²=20²+21²--------> 841---------> AB=√841-------> 29
AB=29 units

cos <span>Θ=20/29-------> 0.6897
</span>
the angle <span>Θ belong to the second quadrant
therefore
the cos</span><span>Θ is negative

the answer is
the cos </span>Θ is -0.6897

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Hello Love!! ♡

· ┈┈┈┈┈┈ · \textbf{Answer} · ┈┈┈┈┈┈ ·

-1 = 26

»»————- \puple{EXPLANATION} ————-««

\mathfrak{simplify:}~4 (4 - 6)~ +~ 7: ~- 1

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Andreyy89

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