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OLga [1]
2 years ago
12

Find the value of each variable.

Mathematics
1 answer:
PSYCHO15rus [73]2 years ago
8 0

Answer:

there r no variables shown

Step-by-step explanation:

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For an angle 0 with the point (-20,-21) on its terminating side, what is the value of cosine ?
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check the picture below.


\bf (\stackrel{a}{-20},\stackrel{b}{-21})\impliedby \textit{let's find the \underline{hypotenuse}} \\\\\\ \textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies c=\sqrt{a^2+b^2} \qquad \begin{cases} c=hypotenuse\\ a=\stackrel{adjacent}{-20}\\ b=\stackrel{opposite}{-21}\\ \end{cases} \\\\\\ c=\sqrt{(-20)^2+(-21)^2}\implies c=\sqrt{841}\implies c=29 \\\\[-0.35em] ~\dotfill\\\\ ~\hfill cos(\theta )=\cfrac{\stackrel{adjacent}{-20}}{\stackrel{hypotenuse}{29}}~\hfill

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while installing a window in an older home, you find that the measurements are not square and will need to shim one side. you fi
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Answer:

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Step-by-step explanation:

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