The 6 Trig Ratios. Three trigonometric ratios Trigonometry involves three ratios - sine cosine and tangent which are abbreviated to sin cos and tan. A student should note that triangles are made out of right angles.
The 6 Trig Ratios.
Cos th x1 x. Solving for a side in a right triangle using the trigonometric ratios. The three ratios can be found by calculating. This gives tanX T P erpendicularP BaseB P e r p e n d i c u l a r P B a s e B As cosecant secant and cotangent are just reciprocals of the sine cosine and tangent functions all you have to do is take the reciprocals of the respective ratios.