LouayJ488237 LouayJ488237
  • 25-10-2022
  • Mathematics
contestada

Just wanted to check to see if I got the right answer or not, and if not, explain

Just wanted to check to see if I got the right answer or not and if not explain class=

Respuesta :

VinhS745100 VinhS745100
  • 25-10-2022
[tex]b^2=a^2+c^2-2ac\text{ }cosB[/tex]

That"s the Cosine formula above

Given :

a=14

c=16

B=35 degree

Substitute into the formula

[tex]\begin{gathered} b^2=14^2+16^2-(2\times14\times16\times cos35) \\ b^2=452-366.98 \\ b^2=85.02 \\ b=\sqrt{85.02} \\ b=9.2 \end{gathered}[/tex]

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