Синусова и косинусова теорема-2

Синусова и косинусова теорема-2

Assessment

Assessment

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Mathematics

9th - 10th Grade

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Hard

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7 questions

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1.

Multiple Choice

3 mins

1 pt

В триъгълник две от страните са 5см и 4см, а ъгълът между тях е 60°. Намерете третата страна.

2см

√21см

√19см

4см

2.

Multiple Choice

3 mins

1 pt

В триъгълник АВС 
∢В= 30°, ∢ С= 60°, АВ=√3см.
Намерете страната АС.

1см

3см

√3см

√2см

3.

Multiple Choice

3 mins

1 pt

В триъгълник АВС 
∢В= 30°, АС=8см.
Намерете радиуса на описаната окръжност.

5см

8см

√5см

√3см

4.

Multiple Choice

3 mins

1 pt

В триъгълник АВС 
∢ BAС= 60°, CВ=2√3см.
Намерете радиуса на описаната окръжност.

2см

3см

√3см

√2см

5.

Multiple Choice

3 mins

1 pt

Страните на триъгълник ABC  са BC=7см, АС=5см и АВ=8см.
Намерете големината на  ∢ВАС.

60°

30°

90°

45°

6.

Multiple Choice

3 mins

1 pt

Намерете страната АВ на ⊿ABC, ако 
BC=10см, AC=6см, ∢ACB=120°.

7см

14см

98см

√98см

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