Category: 1. Sine, Cosine, Tangent

The trigonometric function can be described as being even or odd. Odd trigonometric functions: A trigonometric function is said to be an odd function if f(-x) = -f(x) and symmetric with respect to the origin. Even trigonometric functions: A trigonometric function is said to be an even function, if f(-x) = f(x) and symmetric to the y-axis.… Continue reading Even and Odd Trigonometric Functions

(the TOA formula) Tangent = Opposite over Adjacent

(the SOH formula) The first part of this video will explain the difference between the hypotenuse, adjacent and opposite sides of a right triangle. Then it shows how to use the sine formula (the SOH formula). Sine = Opposite over the Hypotenuse

The following diagram show how to use SOHCAHTOA for a right triangle. How to identify the Opposite Sides, Adjacent Sides and Hypotenuse of a Right Triangle? Definition of Cos, Sin, Tan, Csc, Sec, Cot for the right trianglesin x = opposite/hypotenusecos x = adjacent/hypotenusetan x = opposite/adjacentcsc x = 1/sin x = hypotenuse/oppositesec x =… Continue reading SOH-CAH-TOA

Hypotenuse, Adjacent and Opposite Sides. In the following right triangle PQR, the side PQ, which is opposite to the right angle PRQ is called the hypotenuse. The hypotenuse is the longest side of the right triangle. the side RQ is called the adjacent side of angle θ. the side PR is called the opposite side of angle θ. Note: The adjacent… Continue reading Sides Of A Right Triangle