meggie98
meggie98 meggie98
  • 03-02-2020
  • Mathematics
contestada

Find the Missing side length.

Find the Missing side length class=

Respuesta :

jay40891
jay40891 jay40891
  • 03-02-2020

Answer:

13.3

Step-by-step explanation:

Let the missing side be [tex]x[/tex]. Using cosine rule,

[tex]x^{2} = 18^{2} + 8^{2} -2(8)(18)cos43[/tex]

[tex]x = \sqrt{18^{2} +8^{2}-2(18)(8)cos43 }[/tex]

[tex]x = 13.3[/tex] (3 sf)

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