Statics: 2-20 (Hibbeler)

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2-20. Determine the design angle (phi) between struts AB and AC so that the 400-lb horizontal force has a component of 600 lb which acts up to the left, in the same direction as from B towards A.

Timestamps:
0:00 Problem statement
1:00 Triangle law
2:30 Law of cosines
4:05 Sine law
5:15 Solving for phi

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Reference:
R. C. Hibbeler, Engineering Mechanics: Statics.
Hoboken: Pearson, 2015
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