Share on Facebook law of cosines (redirected fromCosine formula) law of cosines [′lȯ əv ′kō‚sīnz] (mathematics) Given a triangle with anglesA, B,andCand sidesa, b, copposite these angles respectively:a2=b2+c2- 2bccosA. ...
...the Law of Cosines(also called theCosine Rule) says: c2= a2+ b2− 2ab cos(C) It helps us solve some triangles. Let's see how to use it. Example: How long is side "c" ... ? We know angle C = 37º, and sides a = 8 and b = 11 ...
cosineAlso found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia. Related to cosine: Cosine law, Cosine rule, Direction cosine, Hyperbolic cosinetrigonometry trigonometry [Gr.,=measurement of triangles], a specialized area of geometry concerned with the properties of and relations among the ...
Related to Similarity:Similar triangles,Similarity transformation The following article is fromThe Great Soviet Encyclopedia(1979). It might be outdated or ideologically biased. a concept in geometry. Geometric figures are said to be similar if they are identical in shape, regardless of whether they ...
Irregular polygons could have a few sides that are equal but just not all of them, correct? What is the difference between a coordinate geometry proof and a proof method that does not require coordinate geometry? Given two similar triangles, one with 3 values and the ot...
Triangles; Sides and Angles: In geometry, the sides and angles of a triangle have a definite relationship that is given by using the sine rule and cosine rule. According to the cosine rule in a triangle {eq}ABC {/eq}: $$\begin{al...
The semiperimeter of the triangle is half its perimeter. The semiperimeter frequently appears in formulas for triangles to be given a separate name. By the triangle inequality, the longest side length of a triangle is less than the semiperimeter....
What is the sine rule? When we cut a rectangle into four triangles by drawing two diagonals, are all the triangles congruent? How do I find slope? What is geometry ? Find the equation of the line between these two points A (0, 8) and B (-4, 0). ...
inverse function- a function obtained by expressing the dependent variable of one function as the independent variable of another; f and g are inverse functions if f(x)=y and g(y)=x function,mapping,mathematical function,single-valued function,map- (mathematics) a mathematical relation such that...
Law of Cosines, Finding Angles & Sides, SSS & SAS Triangles - Trigonometry 43 related questions found What is law of sine and cosine? To solve a triangle is to find the lengths of each of its sides and all its angles. The sine rule is used when we are given either a)two angles and...