Тригонометрия формулалары1

Тригонометрия формулалары1

9th Grade

12 Qs

quiz-placeholder

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Тригонометрия формулалары1

Тригонометрия формулалары1

Assessment

Quiz

Mathematics

9th Grade

Hard

Created by

Gulnur Ertaeva

Used 19+ times

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12 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Қос бұрыштың дұрыс формулаларын белгілеңіз

cos2a=sin2αcos2α\cos2a=\sin^2\alpha-\cos^2\alpha

sin2α=2sinαcosα\sin2\alpha=2\sin\alpha\cos\alpha

cos2α=cos2αsin2α\cos2\alpha=\cos^2\alpha-\sin^2\alpha

tg2α=2tgα1tg2αtg2\alpha=\frac{2tg\alpha}{1-tg^2\alpha}

tg2α=2tgα1+tg2αtg2\alpha=\frac{2tg\alpha}{1+tg^2\alpha}

2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Қос бұрыштың дұрыс формулаларын белгілеңіз

cos2a=cos2αsin2α\cos2a=\cos^2\alpha-\sin^2\alpha

cos2α=cos2αsin2β\cos2\alpha=\cos^2\alpha-\sin^2\beta

ctg2α=12(ctgαtgα)\operatorname{ctg}2\alpha=\frac{1}{2\left(\operatorname{ctg}\alpha-tg\alpha\right)}

tg2α=2tgα1tg2αtg2\alpha=\frac{2tg\alpha}{1-tg^2\alpha}

ctg2α=12(ctgαtgα)\operatorname{ctg}2\alpha=\frac{1}{2}\left(\operatorname{ctg}\alpha-tg\alpha\right)

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 1cosα2=?\frac{1-\cos\alpha}{2}=?  

 cos2 α2\cos^2\ \frac{\alpha}{2}  

 tg2 α2tg^2\ \frac{\alpha}{2}  

 sin2 α2\sin^2\ \frac{\alpha}{2}  

 ctg2 α2\operatorname{ctg}^2\ \frac{\alpha}{2}  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 1+cosα2=?\frac{1+\cos\alpha}{2}=?  

 cos2 α2\cos^2\ \frac{\alpha}{2}  

 tg2 α2tg^2\ \frac{\alpha}{2}  

 sin2 α2\sin^2\ \frac{\alpha}{2}  

 ctg2 α2\operatorname{ctg}^2\ \frac{\alpha}{2}  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 sinα1+cosα=?\frac{\sin\alpha}{1+\cos\alpha}=?  

 cos2 α2\cos^2\ \frac{\alpha}{2}  

 tg2 α2tg^2\ \frac{\alpha}{2}  

 sin2 α2\sin^2\ \frac{\alpha}{2}  

 ctg2 α2\operatorname{ctg}^2\ \frac{\alpha}{2}  

дұрыс жауап жоқ

6.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 ctg α2=?\operatorname{ctg}\ \frac{\alpha}{2}=?  

 1+cosαsinα\frac{1+\cos\alpha}{\sin\alpha}  

 sinα1+cosα\frac{\sin\alpha}{1+\cos\alpha}  

 1cosαsinα\frac{1-\cos\alpha}{\sin\alpha}  

 sinα1cosα\frac{\sin\alpha}{1-\cos\alpha}  

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

 tg α2=?tg\ \frac{\alpha}{2}=?  

 1+cosαsinα\frac{1+\cos\alpha}{\sin\alpha}  

 sinα1+cosα\frac{\sin\alpha}{1+\cos\alpha}  

 1cosαsinα\frac{1-\cos\alpha}{\sin\alpha}  

 sinα1cosα\frac{\sin\alpha}{1-\cos\alpha}  

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