1 |
In triangle ABC, if α = 90° then: |
- A.
- B.
- C.
- D. none of these
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2 |
The in-radius r of a triangle is given by: |
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3 |
In 2s = a + b + , then in any triangle ABC: |
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4 |
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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5 |
r<sub>3</sub> = |
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6 |
If the elevation of the sun is 30°, the length of the shadow cast by a tower of 150m height is: |
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7 |
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- A. 3:5:2
- B.
- C. 3:2:1
- D. 1:2:3
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8 |
If 2s = a + b + c, then in any triangle ABC: |
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9 |
r r<sub>1</sub> r<sub>2</sub> r<sub>3</sub> = |
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10 |
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