тригонометрия

тригонометрия

11th Grade

24 Qs

quiz-placeholder

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тригонометрия

тригонометрия

Assessment

Quiz

Mathematics

11th Grade

Practice Problem

Easy

Created by

Лана Лашкевич

Used 4+ times

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24 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

основное тригонометрическое тождество

sin2x +cos2x=1\sin^2x\ +\cos^2x=1

1+tg2x=1cos2x1+tg^2x=\frac{1}{\cos^2x}

sin2x+cos2y=1\sin^2x+\cos^2y=1

tgx×ctgx=1tgx\times\operatorname{ctg}x=1

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

 sin2x=\sin2x=  

 cos2xsin2x\cos^2x-\sin^2x  

1

 2sinxcosx2\sin x\cos x  

 sinxcosx\sin x\cos x  

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

 cos(3π2α)\cos\left(\frac{3\pi}{2}-\alpha\right)  

 sinα\sin\alpha  

 cosα\cos\alpha  

 sinα-\sin\alpha  

 cosα-\cos\alpha  

4.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

 cos(3π2α)\cos\left(\frac{3\pi}{2}-\alpha\right)  

 sinα\sin\alpha  

 cosα\cos\alpha  

 sinα-\sin\alpha  

 cosα-\cos\alpha  

5.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

 tg(π2α)tg\left(\frac{\pi}{2}-\alpha\right)  

 tgα-tg\alpha  

 ctgα\operatorname{ctg}\alpha  

 tgαtg\alpha  

 ctgα-\operatorname{ctg}\alpha  

6.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

 cos π4\cos\ \frac{\pi}{4}  

 12\frac{1}{2}  

 32\frac{\sqrt{3}}{2}  

 22\frac{\sqrt{2}}{2}  

1

7.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

 arctg3ar\operatorname{ctg}\sqrt{3}  

 π3\frac{\pi}{3}  

 4π3\frac{4\pi}{3}  

 π6\frac{\pi}{6}  

 π3-\frac{\pi}{3}  

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