tiffani5 tiffani5

21-07-2021
Mathematics

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Given the triangle below, what is the length of the third side, rounded to the nearest whole number?

Given the triangle below what is the length of the third side rounded to the nearest whole number class=

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Luv2Teach Luv2Teach

30-07-2021

Answer:

Step-by-step explanation:

You need the Law of Cosines for this, namely:

[tex]x^2=21^2+14^2-2(21)(14)cos58[/tex] where x is the missing side.

[tex]x^2=441+196-311.5925[/tex] and

[tex]x^2=325.4075[/tex] so

x = 18.0 or just 18

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