- trigonometry
- right triangle trigonometry-1
- right triangle trigonometry-2
- unit circle definition of trig functions
- trig values of any angle
- exploring sine curves
- the graphs of trigonometric functions
- measuring van gogh's cypress
- f(x)=atan(b(x-c))+d
- find the function (sine curves)
- find the tan(φ)
- components of a force
- a math trick-1
- a math trick-2
- area of a circle
- law of sines (proof)
- law of cosines (proof)
- law of cosines (pww)
- the three squares problem
- aristarchus' inequalities
- right triangle trigonometry
- f(x)=asin(b(x-c))+d
- f(x)=acos(b(x-c))+d
- trigonometry_unit circle
- area of a triangle (sas)
- basic trig numbers-2
- basic trig numbers-1
- f(x)=psinx+qcosx
- square-rectangle paradox
