أكاديميا - كولنز - معاجم الجيب العلمية - الرياضيات - انكليزي -فرنسي -عربي الحرف ٧_ c

Academia - Collins - Pocket Scientific Dictionaries - Mathematics - English - French - Arabic Letter 7_ C

convex
convexe

Convex. A curve or surface that curves toward a given reference point.
For example, the dome of a mosque forms a convexity toward the sky.

A convex shape is a shape in which any line connecting two points on the circumference falls within the shape.

coordinates
coordonnées fpl

Coordinates. A coordinate system is used to locate points on a plane or in space. Commonly used coordinate systems include the Cartesian system and the polar system.

coplanar
coplanaire

Uniplane A set of points or lines located on a single plane.

correlation
corrélation f

Correlation. A statistical term used to describe a relationship between two variable quantities when the change in one is related to the change in the other. Positive correlation occurs when the two variables increase and decrease at the same time. Negative correlation occurs when an increase in one variable is accompanied by a decrease in the other variable.

For example, doctors say that there is a positive correlation between smoking and heart disease. The correlation coefficient is a number between -1 and 1, and gives a measure of the correlation between the values ​​of the two variables.

correspondence
correspondance f

Symmetry. A relationship that specializes in matching pairs of elements from two sets. There are four known types of correspondence:

Element-to-element correspondence
Element-to-many-element correspondence
Element-to-many-element correspondence
Element-to-many-element correspondence
Element-to-many-element correspondence

Corresponding points, lines and angles points, lignes, angles, correspondents

Corresponding points and angles. When a relationship is established between two shapes through a simple transformation, the aspects of the first shape are said to correspond to their images in the transformed shape. ABCD and ABCD are similar quadrilaterals, where points C and C are corresponding and angles DAB and D'A'B are corresponding.
When a transversal intersects two other lines, as in the figure below, the pairs of angles p and p', q and q', r and r', and s and 's are called congruent angles.

If the two lines cut by a transversal are parallel, the congruent angles are equal.

cosecant
cosecante f

Cosecant. Trigonometric function. The cosecant of an angle in a right-angled triangle is the ratio:
opposite side / hypotenuse.

Cosecant 0 = sine 1/0
In triangle ABC cosecant 0 = BC/AC

5/4 = 1.25

The value of 0 can now be determined by examining the table of values ​​of the cosecant function. 0 = °53.1

cosine
cosinus m

Cosine. Trigonometric function. The cosine of an angle in a right-angled triangle is the ratio between the adjacent side and the hypotenuse.

Answer 0= CA / CB = 5/13 = 0.385

Now we can determine the value of 0 by examining the table of values ​​of the cosine function 0 = 67.4

From the table of values ​​of the cosine function we find that the answer is: 60 = 0.5. Therefore

And PQ/ 9.6 = 0.5 and PQ = 4.8