Discussion
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- Question
If x+y+z = 1, 1/x + 1/y + 1/z = 1 and xyz = -1, then x3+y3+z3 is equal to
Options- A. -1
- B. 1
- C. -2
- D. 2
- Correct Answer
- 1
- 1. If 2+aa + 2+bb + 2+cc = 4 , then the value of ab+bc+caabc is
Options- A. 2
- B. 1
- C. 0
- D. 1/2 Discuss
- 2. If ?>0 , be an acute angle, then the value of it in degrees satisfying cos2?-3cos?+2sin2?=1 is
Options- A. 90°
- B. 30°
- C. 45°
- D. 60° Discuss
- 3. If x2-3x+1=0, then x+1x is (x?0)
Options- A. 1
- B. 0
- C. 3
- D. 2 Discuss
- 4. ?DEF is right angled at E. If cosD = 8/17, then what is the value of secF ?
Options- A. 17/8
- B. 8/17
- C. 17/15
- D. 15/17 Discuss
- 5. What is the value of (cos45° + 1/3) ?
Options- A. 2+?3
- B. (2?2+1)/?2
- C. (3+?2)/3?2
- D. 5/?3 Discuss
- 6. The value of Cot17°Cot73°Cos222° + 1Cot17°Sec268° is
Options- A. 0
- B. 1
- C. 2
- D. ?3 Discuss
- 7. If (x+1/x) = 5, then the value of 5xx2+5x+1 ?
Options- A. 1/3
- B. 1/4
- C. 1/2
- D. 1/5 Discuss
- 8. If 1aa2+1 = 3, then the value of a6+1a3 is
Options- A. 9
- B. 18
- C. 27
- D. 1 Discuss
- 9. If a = ?2 + 1, b = ?2 - 1 then the value of 1a+1+1b+1 ?
Options- A. 0
- B. 1
- C. 2
- D. 3 Discuss
- 10. ? is a positive acute angle and sin? cos? = 0, then the value of sec? + cosec? is
Options- A. 2
- B. ?2
- C. 2?2
- D. 3?2 Discuss
Simplification problems
Search Results
Correct Answer: 1/2
Correct Answer: 60°
Correct Answer: 3
Correct Answer: 17/15
Correct Answer: (3+?2)/3?2
Correct Answer: 1
Correct Answer: 1/2
Correct Answer: 18
Correct Answer: 1
Correct Answer: 2?2
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