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Illusion [34]
3 years ago
12

What is the length of side c, given a = 10, b = 8, and c = 105°?

Mathematics
1 answer:
posledela3 years ago
5 0
We can calculate using cosinus method in triangle
c² = a² + b² - 2ab cos c

Plug in the number to the formula
c² = a² + b² - 2ab cos c
c² = 10² + 8² - 2(10)(8) cos 105°
c² = 100 + 64 - 160 cos 105°
c² = 164 - 160 (-0.26)
c² = 164 + 41.6
c² = 205.6
c = √205.6
c =14.34

C is 14.34 unit length
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Help please, i really need it because its almost due
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D sqrt( A ) sqrt(pi) / pi = r

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Brian should purchase Choice C of fabric

<em><u>Solution:</u></em>

Given that Brian wants to purchase a piece of fabric  that is between 49 and 53 inches long

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Now convert to inches

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