1 |
|
|
2 |
Cot1°, Cot2°, Cot3°, .......... Cot89° = |
|
3 |
tan (α - ß ) = |
|
4 |
|
|
5 |
If sin α = cos ß in any triangle ABC then: |
- A. α + ß = 90°
- B. α + ß = 180°
- C. α + ß = 360°
- D. α + ß
|
6 |
The angles 90°±Θ, 180°±Θ, 270°±Θ, 360°±Θ, are the: |
- A. composite angles
- B. half angles
- C. quadrantal angles
- D. allied angles
|
7 |
tan (270° + Θ) is equal: |
- A. cot Θ
- B. tan Θ
- C. -cot Θ
- D. -tan Θ
|
8 |
|
- A. - cot Θ
- B. - tan Θ
- C. tan Θ
- D. none of these
|
9 |
sin5Θ + sin3Θ is equal to: |
- A. 2cos 2Θ sin Θ
- B. -2 cos 4Θ sin Θ
- C. -2 sin 4Θ cos Θ
- D. 2 sin 4Θ cos Θ
|
10 |
|
- A. quad I
- B. quad. II
- C. quad. III
- D. quad. IV
|