amya57
amya57
13-04-2018
Mathematics
contestada
Find the measure of angle A
Respuesta :
Goalinetsky
Goalinetsky
13-04-2018
Apply the law of cosines. and solve for A
[tex]14^{2} = 11^{2} + 11^{2} - 2(11)(11)cos(A) \\ 196 = 121 + 121 - 242cos(A) \\ -46 = -242cos(A) \\cos(A) = 0.1900826446[/tex]
A = 79.04239272, or 79
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