ericalexington ericalexington
  • 24-07-2018
  • Mathematics
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AGAIN SOMEONE PLEASE HELP ME.

AGAIN SOMEONE PLEASE HELP ME class=

Respuesta :

Plasmataco
Plasmataco Plasmataco
  • 24-07-2018

You need to use the law of cosine:

B^2 = A^2 + C^2 - 2ACcos(b)

55^2 = 90^2 + 50^2 - 2(50)(90)cos(b)

0.841666 = cos(b)

b = 32.68

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