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- Question
The value of the expression 2(sin6?+cos6?) - 3(sin4?+cos4?) + 1 is
Options- A. -1
- B. 0
- C. 1
- D. 2
- Correct Answer
- 0
- 1. If cosx.cosy + sinx.siny = -1 then cosx + cosy is
Options- A. -2
- B. 1
- C. 0
- D. 2 Discuss
- 2. If sin P + cosec P = 2, then the value of sin7P + cosec7P is
Options- A. 1
- B. 2
- C. 3
- D. 0 Discuss
- 3. If secA + tanA = a, then the value of cosA is
Options- A. a2+12a
- B. 2aa2+1
- C. a2-12a
- D. 2aa2-1 Discuss
- 4. If x, y, z are the three factors of a3 -7a - 6 , then value of x+y+z will be
Options- A. 3a
- B. 3
- C. 6
- D. a Discuss
- 5. If ax + by = 1 and bx + ay = 2aba2+b2 then x2+y2a2+b2 is equal to
Options- A. 1
- B. 2
- C. 0.5
- D. 0 Discuss
- 6. If cos? = x2-y2x2+y2 , then the value of cot? is
Options- A. 2xyx2-y2
- B. 2xyx2+y2
- C. x2+y22xy
- D. x2-y22xy Discuss
- 7. If x = cosec? - sin? and y = sec? - cos?, then the relation between x and y is
Options- A. x2+ y2+ 3 =1
- B. x2y2 (x2+ y2+3)=1
- C. x2 (x2+ y2 - 5)=1
- D. y2 (x2+ y2 - 5)=1 Discuss
- 8. A hydrogen filled balloon ascending at the rate of 18 kmph was drifted by wind. Its angle of elevation at 10th and 15th minutes were found to be 60° and 45° respectively. The wind speed (in whole numbers) during the last five minutes, approximately, is equal to
Options- A. 7 km/hr
- B. 11 km/ hr
- C. 26 km/hr.
- D. 33 km/hr Discuss
- 9. Which of the following statement(s) is/are TRUE? I. ?(64) + ?(0.0064) + ?(0.81) + ?(0.0081) = 9.07 II. ?(0.010201) + ?(98.01) + ?(0.25) = 11.51
Options- A. Only I
- B. Only II
- C. Both I and II
- D. Neither I nor II Discuss
- 10. Which of the following statement(s) is/are TRUE? I . 11×3+13×5+15×7+...+111×13 = 1213 II. 11×2+12×3+13×4+...+112×13 = 1213
Options- A. Only I
- B. Only II
- C. Both I and II
- D. Neither I nor II Discuss
Simplification problems
Search Results
Correct Answer: 0
Correct Answer: 2
Correct Answer: 2aa2+1
Correct Answer: 3a
Correct Answer: 1
Correct Answer: x2-y22xy
Correct Answer: x2y2 (x2+ y2+3)=1
Correct Answer: 33 km/hr
Correct Answer: Only I
Correct Answer: Only II
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