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The question is in the photo. it is asking for 2 answers

The question is in the photo. it is asking for 2 answers-example-1
User Slavo
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1 Answer

17 votes
17 votes

9514 1404 393

Answer:

  • 2nd force: 99.91 lb
  • resultant: 213.97 lb

Explanation:

In the parallelogram shown, angle B is the supplement of angle DAB:

∠B = 180° -77°37' = 102°23'

Angle ACB is the difference of angles 77°37' and 27°8', so is 50°29'.

Now, we know the angles and one side of triangle ABC. We can use the law of sines to solve for the other two sides.

BC/sin(A) = AB/sin(C)

AD = BC = AB·sin(A)/sin(C) = (169 lb)sin(27°8')/sin(50°29') ≈ 99.91 lb

AC = AB·sin(B)/sin(C) = (169 lb)sin(102°23')/sin(50°29') ≈ 213.97 lb

User Dmitrij Kuba
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