Where is the adjacent of a triangle

When solving for a missing side of a right triangle, but the only given information is an acute angle measurement and a side length, use the trigonometric functions listed below:.

The trigonometric functions are equal to ratios that relate certain side lengths of a right triangle. When solving for a missing side, the first step is to identify what sides and what angle are given, and then select the appropriate function to use to solve the problem. Sometimes you know the length of one side of a triangle and an angle, and need to find other measurements.

The ratio of the sides would be the opposite side and the hypotenuse. The ratio that relates those two sides is the sine function. The ratio of the sides would be the adjacent side and the hypotenuse. The ratio that relates these two sides is the cosine function.

The mnemonic SohCahToa can be used to solve for the length of a side of a right triangle. First, determine which trigonometric function to use when given an adjacent side, and you need to solve for the opposite side. How high up the building does the ladder reach? Try the given examples, or type in your own problem and check your answer with the step-by-step explanations. We welcome your feedback, comments and questions about this site or page. Working with tangent, sine and cosine is called trigonometry.

Trigono is Greek for triangle, -metry means measuring. In Dutch it is called 'goniometrie', where gonia is Greek for 'angle'. With trigonometry, you always work in right-angled triangles. Similarly, when referring to angle B, there are two sides that are adjacent or touching, or next to to angle B.

One is side BC and the other is side BA. Since side BA is the hypotenuse, BC is the "adjacent" side. In this case, side AC is opposite angle B. I am sorry but your question does not make sense.