j122223
j122223
12-10-2021
Mathematics
contestada
Pls help ASAP I’ll give brainliest
Respuesta :
mhanifa
mhanifa
12-10-2021
Answer:
B. 11.42
Step-by-step explanation:
Use the law of cosines:
[tex]c = \sqrt{a^2+b^2-2ab*cosC}[/tex]
Substitute the values:
[tex]c = \sqrt{9^2+12^2-2*9*12*cos64}=11.42[/tex]
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Аноним
Аноним
11-06-2022
a=9
b=12
C=64
Use law of cosines
c=√a²+b²-2abcosC
c=√9²+12²-2(9)(12)cos64
c=√81+144-216cos64
c=√225-216cos64
c=11.42 approx
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