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petertester7up
14.02.2020 •
Mathematics
What does x equal? Plz help, I will mark brainliest asap!!
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Ответ:
X = 83°
Solution:
XY (x) = 17 ft
XZ (y) = 8 ft
ZY (z) = 16 ft
To find the angle X:
Using Law of cosine formula:![a^{2}=b^{2}+c^{2}-2 bc \cos A](/tpl/images/0511/6717/8a928.png)
Substitute the given values in the formula.
Subtract 320 on both sides of the equation, we get
Divide by –256 on both sides.
X = 83°
Ответ: