1 |
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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2 |
r<sub>1 </sub>= |
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3 |
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4 |
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- A. 3:5:2
- B.
- C. 3:2:1
- D. 1:2:3
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5 |
In a right isoceles triangle, one acute angle is: |
- A. 30°
- B. 45°
- C. 60°
- D. 75°
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6 |
If 2s = a + b + c, then in any triangle ABC: |
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7 |
If α, ß, Γ are the angles of a oblique triangle, then: |
- A. α = 90°
- B. ß = 90°
- C. Γ = 90°
- D. none of these
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8 |
In any triangle ABC, law of tangents is: |
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9 |
A triangle which is not right angle triangle called ________ triangle: |
- A. acute
- B. obtuse
- C. right
- D. oblique
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10 |
In any triangle ABC, law of cosines is: |
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