Mathematics: Find the length of AC.a. 10.1 b. 10.0c. 10.9d. 8.86 PLEASE HELPPP ASAP

Find the length of AC.a. 10.1 b. 10.0c. 10.9d. 8.86 - id10110010988610056932, yoyoho6218

Ответ:

Arealbot

14.02.2022

Mathematics

Option D

Step-by-step explanation:

According to law of cosines =

${a}^{2} = {b}^{2} + {c}^{2} - 2bc. \cos(A)$

where 'a' is the uknown side , 'b' & 'c' are the given sides and angleA is the angle opposite to the uknown side i.e. opposite to 'a'.

Using the Law of cosines , we'll find the length of AC .

${ac}^{2} = {7}^{2} + {13}^{2} - 2 \times 7 \times 13 \times \cos(50)$

$= {ac}^{2} = 49 + 169 - 182 \times 0.76$

$= {ac}^{2} = 218 - 138.8 = 79.68$

$= ac = \sqrt{79.68} = 8.92 = 9(appx)$

In option D , if we'll round of 8.86 , then its appx 9. So option D is right

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Ответ:

erin5678

12.12.2020

Mathematics

Using the sa formula you'll have to substitute in the edge length for s.i thought i could make your day here is the anwser.sa = 6(312)²sa = 584064the surface area is 584,064 feet²hope this : )

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Find the length of AC.
a. 10.1
b. 10.0
c. 10.9
d. 8.86
PLEASE HELPPP ASAP

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