princecham12345 princecham12345

22-07-2020
Mathematics

contestada

Find the value of

x in the triangle shown below.

Find the value of x in the triangle shown below class=

Respuesta :

seaweedtea seaweedtea

22-07-2020

Answer:

69.7° (corrected to 3 significant figures)

Step-by-step explanation:

Use the cosine formula to solve for x.

[tex]cosA=\frac{(b^2+c^2-a^2)}{2bc} \\cos x =(3.5^2+ 3.5^2 -4^2)}/[2(3.5)(3.5)]cos x =0.346939\\x=69.7[/tex]

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