Let’s consider a right-angled triangle to understand the six trigonometric ratios: sine, cosine, tangent, cosecant, secant, and cotangent.

Suppose we have a right-angled triangle ABC, where angle A is the right angle, and angles B and C are acute angles. The sides of the triangle are labeled as follows:

Side opposite angle B: <a

Side adjacent to angle B: <b

Hypotenuse: <c

step by step video on making trigonometric ratios working model