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 It might be outdated or ideologically biased.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 ...
3. THE COSINE RULE II FOR A DUAL SPHERICAL TRIANGLE In this section we prove the Cosine Rule II for dual spherical triangles. Let %A, B% and C~ be three points on dual unit sphere %S 2 given by the linearly independent dual unit vectors %a = a + ε a* , %b = b + ε...
Triangles in Geometry | Definition, Types & Formulas from Chapter 4 / Lesson 5 93K Learn the definition of a triangle in geometry. Learn about the parts of triangles and different types of triangles. Discover how to find the area of a triangle. Related...
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 do you use when proving triangles are congruent? What kind of reasoning is the statement, 'Anything that possesses 360 degrees must be a circle'? Find the derivative of f(x) = 2\cos(3x+2) if Y=5X^2+3 then the tangent at X=0, Y=3 is ...
VK JAISWAL ENGLISH-SOLUTION OF TRIANGLES-Exercise-2 : One or More than One Answer is/are Correct In DeltaABC, angleA=60^(@), angleB=90^(@), angleC=30^(@). Let H be its... 04:41 In an equilateral triangle, if inradius is a rational number then whi... 04:36 Let A, B, ...
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...