Discussion
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- Question
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)]
- Correct Answer
- sinA/(1 + cosA)
- 1. If sec -5?/4 = x, then the value of x is
Options- A. -1/?3
- B. -?2
- C. -1
- D. ?3 Discuss
- 2. 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
- 3. If xy = -18 and x2+ y2= 85 , then find the value of (x + y).
Options- A. 8
- B. 10
- C. 9
- D. 7 Discuss
- 4. 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
- 5. 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
- 6. 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
- 7. Find the sum of interior angles of a dodecagon?
Options- A. 1620°
- B. 1800°
- C. 1440°
- D. 1260° Discuss
- 8. If 3x - 8(2 - x) = -19, then the value of x is
Options- A. -3/11
- B. -33/11
- C. -3/5
- D. -33/5 Discuss
- 9. If x - y = 6 and xy = 40, then find x2 + y2 ?
Options- A. 116
- B. 80
- C. 89
- D. 146 Discuss
- 10. If 2x - 3(2x - 2) > x - 1 < 2 + 2x; then x can take which of the following values?
Options- A. 2
- B. -2
- C. 4
- D. -4 Discuss
Simplification problems
Search Results
Correct Answer: -?2
Correct Answer: 10
Correct Answer: 7
Correct Answer: 19/23
Correct Answer: -20
Correct Answer: cosA/(1+sinA)
Correct Answer: 1800°
Correct Answer: -3/11
Correct Answer: 116
Correct Answer: -2
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