Cosine control on trigonometry in 4th grade.

The chapter on cosine is very interesting but also important. To check students’ understanding, a math test in the fourth grade on trigonometry in the triangle and the cosine (cos ) of an acute angle is necessary. During this evaluation, the teacher will have the opportunity to check if the students have assimilated the course.

Cosine control


Exercise 1
(3 points)

Solve each of the following equations:

a) 8 + x = – 4

b) 5 x – 6 = 10

c) \frac{x}{2}-6=7


Exercise 2
(2 points)

What number must be added to the numerator and denominator of \frac{11}{15} to obtain the fraction \frac{4}{5}?


Exercise 3
(3,5points) ‘the cosine’.

ABC is a right triangle at A.

a) Make a full-scale figure and plot the data on it,

b) Calculate an approximate value of the length AB rounded to the hundredth .

BC = 10 cm \widehat{ABC} = 36°.

c) calculate the length AC .


Exercise 4
(1,5points) ‘the cosine’.

DEF is a right triangle in D

Make a freehand figure.

We have. DE = 8 cm \widehat{DEF} = 31° Calculate EF.


Exercise 5
(3 points)

a)Prove that triangle ABC is a rectangle. specify in which point.

We have: AB = 30 cm AC = 12.5 cm BC = 32.5 cm.

b) Calculate cos \widehat{ABC}.

Deduce a value of the angle \widehat{ABC} to the nearest degree.


Exercise 6
(3 points)

The length x of a rectangle, in centimeters, exceeds its width by 4 cm.

a) Write its width as a function of x.

b) Write the perimeter of this rectangle as a function of x.

c) Calculate x when this perimeter measures 140 cm.


Exercise 7
(4points)

In a pastry shop, a custard tart is sold in slices.

This is the price of one share.

After having sold 3.80 €, there are 5 shares left.

After having sold 5 €, there are 4 shares left.

1. Reproduce and complete the equality :

5 x + 3,80 = …………

which translates the price of a pie in two ways.

2. Solve the resulting equation to determine the price of a unit.

3. Calculate the number of slices that can be made in a pie.

Flan Pie

Cette publication est également disponible en : Français (French) العربية (Arabic)

Télécharger puis imprimer cette fiche en PDF

Télécharger ou imprimer cette fiche «cosine control on trigonometry in 4th grade.» au format PDF afin de pouvoir travailler en totale autonomie.


D'autres fiches dans la section 4th grade math tests




Télécharger nos applications gratuites Mathématiques Web avec tous les cours,exercices corrigés.

Application Mathématiques Web sur Google Play Store.    Application Mathématiques Web sur Apple Store.    Suivez-nous sur YouTube.


D'autres articles analogues à cosine control on trigonometry in 4th grade.


  • 99
    A math test on the Pythagorean theorem in eighth grade (4th grade ) will help you progress in math. In addition, the Pythagorean theorem in 8th grade is very important but also instructive for students. Before starting the test, remember to read the statement carefully. This will help you avoid…
  • 98
    Powers: math test in the fourth grade (quatrième ). The chapter on powers is very important and must be understood completely by the student. The latter must be able to master the properties and calculation methods related to this chapter. He/she must show maximum concentration and avoid unnecessary calculation errors. You must read the statement before starting to save…
  • 98
    Control on pyramids and cones in 4th grade to print in PDF. A math test on geometry in space (pyramids and cones of revolution) in eighth grade is very beneficial. Indeed, the chapter on geometry in space allows students to develop new skills. In this way, they will learn a simple and interesting method of solving. This chapter also requires the use…
Les dernières fiches mises à jour

Voici la liste des derniers cours et exercices ajoutés au site ou mis à jour et similaire à cosine control on trigonometry in 4th grade. .

  1. Integrals : corrected high school math exercises in PDF.
  2. Intégrales : exercices de maths en terminale corrigés en PDF.
  3. الوظائف والحدود: تمارين الرياضيات في السنة النهائية مصححة بتنسيق PDF.
  4. Functions and limits: senior math exercises corrected in PDF.
  5. Fonctions et limites : exercices de maths en terminale corrigés en PDF.


Inscription gratuite à Mathématiques Web. Mathématiques Web c'est 2 146 112 fiches de cours et d'exercices téléchargées.

Copyright © 2008 - 2023 Mathématiques Web Tous droits réservés | Mentions légales | Signaler une Erreur | Contact

.
Scroll to Top
Mathématiques Web

FREE
VIEW