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Hệ thức lượng trong tam giác thường

Authored by Quyền Nguyễn Trần

Mathematics

10th Grade

Used 317+ times

Hệ thức lượng trong tam giác thường
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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

 a2=...2+c22bccosαa^2=...^2+c^2-2bc\text{c}os\alpha  

 bb  

 aa  

 mam_a  

 RR  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

 a2=...2+c22bccosAa^2=...^2+c^2-2bc\text{c}osA  

 bb  

 aa  

 mam_a  

 RR  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

 b2=...2+c22accosBb^2=...^2+c^2-2ac\text{c}osB  

 bb  

 aa  

 mam_a  

 RR  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

 b2=...2+c22accosBb^2=...^2+c^2-2ac\text{c}osB  

 bb  

 aa  

 mam_a  

 RR  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

 c2=a2+b22ab...c^2=a^2+b^2-2ab...  

 cosC\text{c}osC  

 cosB\text{c}osB  

 sinB\sin B  

 sinC\sin C  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

 ma2=2(b2+c2)a2...m_a^2=\frac{2\left(b^2+c^2\right)-a^2}{...}  

4

2

3

1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

 asinA=2...\frac{a}{\sin A}=2...  

 RR  

 bb  

 cc  

 cosA\text{c}osA  

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