**Q. According to Lami's theorem, a body is in equilibrium condition if each force among three ____________ are proportional to sine angle between other two.***- Published on 18 Sep 15***a.** coplanar, collinear forces

**b.** collinear, non-concurrent forces

**c.** coplanar, non-concurrent forces

**d.** coplanar, concurrent forces

**ANSWER: coplanar, concurrent forces **