Formules de trigonométrie

Formules de trigonométrie

10th Grade

7 Qs

quiz-placeholder

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Formules de trigonométrie

Formules de trigonométrie

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Medium

Created by

Cécile Lambert

Used 5+ times

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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Vrai ou faux ?

 sin80°=2.sin40°\sin80°=2.\sin40°  

Vrai

Faux

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 cos 3π4.cos π2sin 3π4.sin π2\cos\ \frac{3\pi}{4}.\cos\ \frac{\pi}{2}-\sin\ \frac{3\pi}{4}.\sin\ \frac{\pi}{2} 

 est égal à 

 22\frac{-\sqrt{2}}{2}  

 22\text{}\frac{\sqrt{2}}{2}  

 12\frac{1}{2}  

 12\frac{-1}{2}  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 cos 23π12\cos\ \frac{23\pi}{12}  est égal à 

 cos π12-\cos\ \frac{\pi}{12}  

 sin π12\sin\ \frac{\pi}{12}  

 cos π12\cos\ \frac{\pi}{12}  

 12\frac{1}{2}  

4.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

 cos 70°\cos\ 70°  est égal à

 2.cos 35°.sin 35°2.\cos\ 35°.\sin\ 35°  

 sin 20°\sin\ 20°  

 1sin 70°1-\sin\ 70°  

 cos235°sin235°\cos^235°-\sin^235°  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 tan 120°\tan\ 120°  est égale à

 3-\sqrt{3}  

 33\frac{\sqrt{3}}{3}  

 3\sqrt{3}  

 33\frac{-\sqrt{3}}{3}  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Si sin b=35 \sin\ b=\frac{-3}{5}\  et que  bb\in  au 2ème quadrant, alors :   

 cos b=45\cos\ b=\frac{4}{5}  

 cos b=45\cos\ b=\frac{-4}{5}  

on ne sait pas déduire la valeur de  cos b\cos\ b  

cet exercice est impossible

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Si sin 25°=0.3\sin\ 25°=0.3  alors : 


 sin 50°=0.6\sin\ 50°=0.6  

 cos 50°=0.3\cos\ 50°=0.3  

 sin 50°=0.6 .cos 25°\sin\ 50°=0.6\ .\cos\ 25°  

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