Editing Lami's theorem (section)

In [[physics]], '''[[Bernard Lamy|Lami]]'s theorem''' is an equation relating the magnitudes of three [[coplanar]], [[Concurrent lines|concurrent]] and  [[Coplanarity|non-collinear]] vectors, which keeps an object in [[Mechanical equilibrium|static equilibrium]], with the angles directly opposite to the corresponding vectors. According to the theorem,

:<math>\frac{v_A}{\sin \alpha}=\frac{v_B}{\sin \beta}=\frac{v_C}{\sin \gamma}</math>

where <math>v_A, v_B, v_C</math> are the magnitudes of the three coplanar, concurrent and non-collinear vectors, <math>\vec{v}_A, \vec{v}_B, \vec{v}_C</math>, which keep the object in static equilibrium, and <math>\alpha,\beta,\gamma</math> are the angles directly opposite to the vectors,<ref name=":0">{{Cite book|url=https://books.google.com/books?id=8Yf0AQAAQBAJ&q=lamis+theorem|title=Engineering Mechanics: Statics and Dynamics|last=Dubey|first=N. H.|date=2013|publisher=Tata McGraw-Hill Education|isbn=9780071072595|language=en}}</ref> thus satisfying <math>\alpha+\beta+\gamma=360^o</math>.

Lami's theorem is applied in static analysis of mechanical and structural systems.  The theorem is named after [[Bernard Lamy]].<ref>{{Cite web|url=http://www.oxfordreference.com/view/10.1093/oi/authority.20110803100049237|title=Lami's Theorem - Oxford Reference|access-date=2018-10-03}}</ref>