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10kl.Sinusas, kosinusas, tangentas

Authored by Rolandas Šidlauskas

Mathematics

10th Grade

Used 45+ times

10kl.Sinusas, kosinusas, tangentas
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

 sinA=?\sin A=?  (žr. į brėž.)

 35\frac{3}{5}  

 45\frac{4}{5}  

 34\frac{3}{4}  

 43\frac{4}{3}  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Nustatyti, kuri lygybė yra teisinga?

 sinA=cosB\sin A=\cos B  

 sinB=cosB\sin B=\cos B  

 tgA=tgBtgA=tgB  

 sinA=tgB\sin A=tgB  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Apskaičiuoti  sin245o+cos245o=\sin^245^o+\cos^245^o=  

1

1,5

2

2,5

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Rasti kraštinės x ilgį (dešimtųjų tikslumu)

1.5

1,4

3,8

3,9

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Nustatyti kampo A dydį laipsnio tikslumu

37o37^o

53o53^o

41o41^o

30o30^o

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Suprastinti reiškinį

  cosαtgα\cos\alpha\cdot tg\alpha  

 cos2α\cos^2\alpha  

 sin2α\sin^2\alpha  

 sinα\sin\alpha  

 cosα\cos\alpha  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Suprastinti reiškinį
 (sinα+cosα)2=\left(\sin\alpha+\cos\alpha\right)^2=  

1

 1+2sinαcosα1+2\sin\alpha\cdot\cos\alpha  

 2sinαcosα2\sin\alpha\cdot\cos\alpha  

 12sinαcosα1-2\sin\alpha\cdot\cos\alpha  

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