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Trigonometrija

Authored by artur levikin

Mathematics

11th Grade

Used 66+ times

Trigonometrija
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6 questions

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1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

 sin2x+cos2x=\sin^2x+\cos^2x=  

0

1

-1

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 1+ctg2x=1+\operatorname{ctg}^2x=  

 1sin2x\frac{1}{\sin^2x}  

 1cos2x\frac{1}{\cos^2x}  

 sin2x\sin^2x  

 cos2x\cos^2x  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 cos2αcos2αsin2α\cos^2\alpha-\cos^2\alpha\sin^2\alpha  

 cos4α\cos^4\alpha  

 sin2α\sin^2\alpha  

1

 cos2α\cos^2\alpha  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 1sin2β1cos2β\frac{1-\sin^2\beta}{1-\cos^2\beta}  

 ctgβ\operatorname{ctg}\beta  

 tgβtg\beta  

 sin2β\sin^2\beta  

 cos2β\cos^2\beta  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 (1+ctg2α)sin2αcos2α\left(1+\operatorname{ctg}^2\alpha\right)\sin^2\alpha-\cos^2\alpha  

 sin2α\sin^2\alpha  

 cos2α\cos^2\alpha  

 tg2αtg^2\alpha  

 ctg2α\operatorname{ctg}^2\alpha  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Vai 1sinxcosx=cosx1+sinx  ?Vai\ \frac{1-\sin x}{\cos x}=\frac{\cos x}{1+\sin x}\ \ ?  

Jā, protams! 

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