Тригонометрия

Тригонометрия

10th Grade

10 Qs

quiz-placeholder

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Тригонометрия

Тригонометрия

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Hard

Created by

Марина Геннадьевна

Used 153+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

 sin2x+cos2x=\sin^2x+\cos^2x=  

0

1

 π2\frac{\pi}{2}  

-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

 sin(αβ)\sin\left(\alpha-\beta\right)  

 2sinαcosβ2\sin\alpha\cos\beta  

 sinβcosαcosβsinα\sin\beta\cos\alpha-\cos\beta\sin\alpha  

 sinαcosβ+sinβcosα\sin\alpha\cos\beta+\sin\beta\cos\alpha  

 sinαcosβsinβcosα\sin\alpha\cos\beta-\sin\beta\cos\alpha  

4.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

В какой четверти находится угол  5π4\frac{5\pi}{4}  

1

2

3

4

5.

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  

6.

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  

7.

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

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