sarahishere68338 sarahishere68338
  • 21-08-2018
  • Mathematics
contestada

C. 119.84
D. 21.65
Math question please help
If you get this right I will mark you as a brainliest

C 11984 D 2165 Math question please help If you get this right I will mark you as a brainliest class=

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musiclover10045
musiclover10045 musiclover10045
  • 21-08-2018

c^2 = a^2 + b^2 - 2 * a *b *cos(Y)


250^2 = 160^2 + 260^2 - 2 *160 * 260 * cos(Y)

62500 = 25600 + 67600 - 83200 * cos(Y)

83200 * cos(Y) = 25600 + 67600 - 62500

83200 * cos(Y) = 30700

cos(Y) = 307/832

Y = arccos(307/832)

Y = 68.35


X = 180 - 68.35

X = 111.65


The answer is B.

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