| 1 |
In a triangle ABC b = √3, c = 1, α = 30° then a = : |
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| 2 |
The in-radius r of a triangle is given by: |
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| 3 |
The circum-radius R of a triangle is given by: |
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| 4 |
With usual notations for triangle R equals: |
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| 5 |
The lengths of the sides of a triangle are proportional to the sines of the opposite angles to the sides. This is known as: |
- A. The law of sines
- B. The law of cosines
- C. The law of tangents
- D. The fundamental law
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| 6 |
A circle which touches one side of a triangle externally and the other two produces sides internally is known as: |
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| 7 |
In a triangle ABC if a<sup>2</sup> - b<sup>2</sup> + c<sup>2</sup> = ac then < ß = |
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| 8 |
In any triangle ABC, law of tangents is: |
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| 9 |
In a triangle ABC, (s - a)(s - b) = s(s - c), then the angle Γ = |
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| 10 |
r r<sub>1</sub> r<sub>2</sub> r<sub>3</sub> = |
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