Statics Toolbox


Right Triangles

Pythagorean Theorem

Basic trig ratios

Keep in mind that you can re-arrange these.  You can also choose the other angle to be “Angle,” but remember to swap the adj and opp.

Inverse Trig Ratios

All Triangles

180° Rule

  • Sum of the interior angles is 180°

Law of Sines

Law of cosines

If you are consistent in matching angles with their opposite sides, any side can be C.

Quadratic Equations

Put quadratics into this form:

Solve by

Simultaneous Equations


Cramer’s Rule