| 1 |
A circle which touches one side of a triangle externally and the other two produces sides internally is known as: |
|
| 2 |
The in-radius r of a triangle is given by: |
|
| 3 |
|
- A. r<sub>1</sub>
- B. r<sub>2</sub>
- C. r<sub>3</sub>
- D. r
|
| 4 |
In triangle the length of the sides are 7, 4√3 and √13. Then the smallest angle is: |
- A. 15°
- B. 30°
- C. 60°
- D. 45°
|
| 5 |
In any triangle ABC, law of sines is: |
|
| 6 |
If 2s = a + b +c, then in any triangle ABC: |
- A.
- B.
- C.
- D. none of these
|
| 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
|
| 8 |
|
|
| 9 |
In any triangle ABC, law of cosines is: |
|
| 10 |
With usual notations for triangle R equals: |
|
