Discussion
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- Question
If sinA = x, then x is equal to
Options- A. ?(1 - cos2A)
- B. ?(1 - sin2A)
- C. ?(1 + cos2A)
- D. ?(1 + sin2A)
- Correct Answer
- ?(1 - cos2A)
- 1. Which of the following is not a quadratic equation?
Options- A. 2x(x + 4) -11 = x(x - 3) + 6
- B. 4x(x + 4) -11 = 5x(x - 3) + 5
- C. x(x + 2) -15 = x(x - 5) + 11
- D. 2x2 + 8x - 11 = 0 Discuss
- 2. If x3 = 62 - 32 , then the value of x is
Options- A. 9
- B. 6
- C. 3
- D. 1 Discuss
- 3. If 5 - 2x ? 4 - x and 3(2 - x) > 2 - 4x; then x can take which of the following values?
Options- A. 3
- B. 2
- C. -3
- D. -5 Discuss
- 4. Square of (3x ? 5xy) is
Options- A. 9x2 - 30x2y + 25x2y2
- B. 9x2 - 15x2y + 25x2y2
- C. 25x2 - 15x2y + 9x2y2
- D. 25x2 - 30x2y + 9x2y2 Discuss
- 5. If sin ?/6 + sec ?/6 = x, then x is
Options- A. (2?2-1)/2
- B. 5/?3
- C. (?6-1)/?2
- D. (?3+4)/2?3 Discuss
- 6. What is the slope of the line, perpendicular to the line 3x - 6y = 4?
Options- A. -2
- B. 2
- C. 2/3
- D. -2/3 Discuss
- 7. Product of 9b2, 3a2 and 4ab is
Options- A. 108a2b2
- B. 108a3b3
- C. 108a3b2
- D. 108a4b4 Discuss
- 8. If tan2A - tan2B = x , then the value of x is
Options- A. (sin2A - sin2B)/(cos2A cos2B)
- B. (sin2A sin2B)/(cos2A - cos2B)
- C. (sin2A + sin2B)/(cos2A cos2B)
- D. (sin2A sin2B)/(cos2A + cos2B) Discuss
- 9. ?[(1 sinA)/(1 + sinA)] is equal to?
Options- A. secA - tanA
- B. cosecA - cotA
- C. secA + tanA
- D. cosecA + cotA Discuss
- 10. What is the value of (4a2 + 8b + 14c + 2)/2 ?
Options- A. 2a2 + 4b + 7c + 1
- B. a2 + 4b + 7c + 1
- C. 2a2 + 4b + 7c + 2
- D. a2 + 4b + 7c + 2 Discuss
Simplification problems
Search Results
Correct Answer: x(x + 2) -15 = x(x - 5) + 11
Correct Answer: 3
Correct Answer: -3
Correct Answer: 9x2 - 30x2y + 25x2y2
Correct Answer: (?3+4)/2?3
Correct Answer: -2
Correct Answer: 108a3b3
Correct Answer: (sin2A - sin2B)/(cos2A cos2B)
Correct Answer: secA - tanA
Correct Answer: 2a2 + 4b + 7c + 1
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