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Arccosine 2

Arccosine

Select your language EnglishSpanish The arccosine (notation: arccos or cos-1) is the inverse function of the cosine. That is: As the arcsine and sine are inverse functions, their composition is the identity. That is:...

Perpendicular Bisector of a Triangle 0

Perpendicular Bisector of a Triangle

Select your language EnglishSpanish The perpendicular bisector of a segment is a line perpendicular to the segment that passes through its midpoint. It has the property that each of its points is equidistant from...

Sine 0

Sine

Select your language EnglishSpanish In a right triangle, the sine of an angle θ is defined as the ratio of the opposite leg (a) to the hypotenuse (c). It is one of the trigonometric...

Altitude of a triangle 0

Altitude of a Triangle

Select your language EnglishSpanish The altitude of a triangle, or height, is a line from a vertex to the opposite side, that is perpendicular to that side. It can also be understood as the...

Perimeter of a triangle 0

Perimeter of a triangle

Select your language EnglishSpanish The perimeter of a triangle is the sum of its three sides. The formula for the perimeter of a triangle depends on the type of triangle. But there is a...

Geometry 2

Geometry

Select your language EnglishSpanish GEOMETRY What is geometry? Straight line Polygon Triangle Quadrilateral Pentagon Hexagon Heptagon Octagon Conic Section Circle, Semicircle, and Annulus Polyhedron Prism Pyramid Regular polyhedron Surface Area of Revolution Shapes in...

Scalene triangle 0

Scalene Triangle

Select your language EnglishSpanish A scalene triangle is a triangle in which all three sides have different lengths and all angles are diferent too. This type of triangle can be a right triangle (one...

Cosine 0

Cosine

Select your language EnglishSpanish In a right triangle, the cosine of an angle θ is defined as the ratio of the adjacent leg (b) to the hypotenuse (c). It is one of the trigonometric...

Similar triangles 0

Similar triangles

Select your language EnglishSpanish In Euclidean geometry, two objects are similar if they are the same shape, regardless of their size. Two triangles are similar if, and only if, their angles are congruent (equal)...

Secant 0

Secant

Select your language EnglishSpanish The secant is the reciprocal trigonometric ratio of the cosine. It is the reciprocal or multiplicative inverse of the cosine, that is, sec θ · cos θ = 1. In a right triangle, the secant...