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  • 12-05-2018
  • Mathematics
contestada

will give brainiest if correct

A. 69.1
B. 20.9
C. 22.4
D. 67.6

will give brainiest if correct A 691 B 209 C 224 D 676 class=

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jamiahharrell21 jamiahharrell21
  • 12-05-2018
I think it's D. But I'm not sure if my math was correct
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aencabo
aencabo aencabo
  • 12-05-2018
Using sin law;

sin A/ a = sinB/ b

where A = C or 90 degrees; a = 21
B = ? , b = 8

solving for b;
sin(90) / 21 = sin(B) / 8 ; B = 22.39 degrees

Total angle of triangle = 180

180 - 90 - 22.39 = x
x = 67.607 degrees
Answer Link

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