AvelineL99695 AvelineL99695
  • 25-10-2022
  • Mathematics
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What is the value of x to the nearest tenth?A.25.7B.43.2C.88.8D.89.7

What is the value of x to the nearest tenthA257B432C888D897 class=

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AlyricaQ48402 AlyricaQ48402
  • 25-10-2022
[tex]\begin{gathered} 70^2=52^2+48^2-2\cdot52\cdot48\cdot\cos x\rightarrow \\ 4900=5008-4992\cdot\cos x\rightarrow\cos x=\frac{4900-5008}{-4992}=\frac{108}{4992} \\ x=\arccos \frac{108}{4992}=88.8 \end{gathered}[/tex]

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