Statics Trusses: When to use Sin and Cos

This tutorial runs through a statics truss problem (method of joints) and explains at every step when to use sin and when to use cos. Essentially we are just using SOHCAHTOA to find the opposite and adjacent sides of triangles that we construct, to determine the horizontal and vertical components of the internal forces in each member. We use these components to complete the sum of force in x and y directions at each joint. This video is part of a full free course on engineering statics. The course covers vector review, 2D statics, moments, friction, 3D statics, trusses, frames & machines, centroids & distributed loads, shear force diagrams & bending moment diagrams (SFD BMD). Links to the course are here: Website: https://www.engineer4free.com/statics YouTube:    • Statics   If you found this video helpful, then please give a 👍 and subscribe. If you're able to, please support my work on Patreon:   / engineer4free   Also follow these: Facebook:   / engineer4free   Instagram:   / engineer4free   Twitter:   / engineer4free   LinkedIn:   / engineer4free   Thanks for watching, I hope it helps!