Then, for ∠BAC, value of sinθ = Perpendicular/ hypotenuse = BC/AB Also, if we chose AC as the base and BC as the perpendicular. In that case, side AB will be the hypotenuse. The most common trigonometric ratios are sine, cosine, and tangent.Ĭonsider a right-angle triangle ABC, right-angled at C. Trigonometric ratios are the ratios of sides of a right-angle triangle. You can download Trigonometry Cheat Sheet by clicking on the download button belowīrowse more Topics under Introduction To Trigonometry Moreover, any of the two sides other than the hypotenuse can be chosen as the base for performing the calculation.
Base: The side on which the right angle triangle stands is known as its base.Also, it is opposite the right angle of the triangle. Hypotenuse: It is the largest side of the triangle.Furthermore, each side of the right angle triangle has a name. A right-angle triangle is a special triangle in which one angle is 90 o and the other two are less than 90 o.
Trigonometric Ratios are applicable only for a right-angle triangle. Trigonometric Ratios in Right Angle Triangle
