Discussion
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- Question
If xy = -18 and x2+ y2= 85 , then find the value of (x + y).
Options- A. 8
- B. 10
- C. 9
- D. 7
- Correct Answer
- 7
- 1. If (8 - 10x) - (13x - 2) = -9, then the value of x is
Options- A. -19/23
- B. 19/23
- C. -1/23
- D. 1/23 Discuss
- 2. Find k, if the line 4x - y = 1 is perpendicular to the line 5x - ky = 2?
Options- A. 20
- B. -20
- C. 4
- D. -4 Discuss
- 3. If 1 + secA = x, then the value of x is
Options- A. sinAtanA/(1 + cosA)
- B. ?[sinAtanA/(1 - cosA)]
- C. sinAtanA/(1 - cosA)
- D. ?[sinAtanA/(1 + cosA)] Discuss
- 4. If ?[(1 - cosA)/2] = x, then the value of x is
Options- A. cos(A/2)
- B. tan(A/2)
- C. sin(A/2)
- D. cot(A/2) Discuss
- 5. If cot 60° + cosec 60° = x, then the value of x is
Options- A. (1-2?2)/?2
- B. (?3-4)/2?3
- C. 1
- D. ?3 Discuss
- 6. If 2x -3(x + 2) < 5 - 2x < -x + 2, then find the value of x.
Options- A. 2
- B. 0
- C. 10
- D. 12 Discuss
- 7. If sec -5?/4 = x, then the value of x is
Options- A. -1/?3
- B. -?2
- C. -1
- D. ?3 Discuss
- 8. If tan(A/2) = x, then the value of x is
Options- A. sinA/(1 - cosA)
- B. sinA/(1 + cosA)
- C. ?[sinA/(1 + cosA)]
- D. ?[sinA/(1 - cosA)] Discuss
- 9. If 2secA - (1 + sinA)/cosA = x, then the value of x is
Options- A. cosecA/(1+sinA)
- B. cosA/(1+sinA)
- C. cosA(1+sinA)
- D. cosecA(1+sinA) Discuss
- 10. Find the sum of interior angles of a dodecagon?
Options- A. 1620°
- B. 1800°
- C. 1440°
- D. 1260° Discuss
Simplification problems
Search Results
Correct Answer: 19/23
Correct Answer: -20
Correct Answer: sinAtanA/(1 - cosA)
Correct Answer: sin(A/2)
Correct Answer: ?3
Correct Answer: 10
Correct Answer: -?2
Correct Answer: sinA/(1 + cosA)
Correct Answer: cosA/(1+sinA)
Correct Answer: 1800°
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