There are three main trigonometric functions - Sine θ (sin θ), Cosine θ (cos θ) and Tangent θ (tan θ). Sin θ - Ratio of Perpendicular to Hypotenuse Cos θ - Ratio of Base to Hypotenuse Tan ...

trigonometric identities (reciprocal, quotient, even/odd, Pythagorean, co-function etc), law of sines, law of cosines, formula of area of triangles etc. These notes are prepared by experienced ...