Respuesta :

a^2 = 4.0^2 + 3.7^3 - 2*4*3.7 cos 334

= 4.865

a =  2.2  to nearest tenth.
Cetacea

Answer: a = 2.2

Given that: b = 4.0, c = 3.7, A=33.

The law of cosine is:

[tex]a^2=b^2+c^2-2bccosA\\a^2=4.0^2+3.7^2-2(4.0)(3.7)cos(33)\\a^2=4.86535118882\\a=\sqrt{4.86535118882}\\a=2.20575410888\\a=2.2[/tex]

So a = 2.2

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