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- Question
If sec2A cosec2A = x , then x is
Options- A. sec2A + cosec2A + 2
- B. tan2A + cot2A - 2
- C. tan2A + cot2A + 2
- D. sec2A + cosec2A - 2
- Correct Answer
- tan2A + cot2A + 2
- 1. What is the value of [cos (90 + A)÷sec (270 ? A)] + [sin (270 + A)÷cosec (630 ? A)]?
Options- A. 3 sec A
- B. tan A sec A
- C. 0
- D. 1 Discuss
- 2. What is the value of sin (90° + 2A)[4 ? cos2(90° ? 2A)]?
Options- A. 2(cos3 A ? sin3 A)
- B. 2(cos3 A + sin3 A)
- C. 4(cos6 A+ sin6 A)
- D. 4(cos6 A ? sin6 A) Discuss
- 3. What is the value of [2 sin (45 + ?) sin (45 ? ?)]/cos 2??
Options- A. 0
- B. tan 2?
- C. cot 2?
- D. 1 Discuss
- 4. What is the value of [(cos 3? + 2cos 5? + cos 7?)÷(cos ? + 2cos 3? + cos 5?)] + sin 2? tan 3??
Options- A. cos 2?
- B. sin 2?
- C. tan 2?
- D. cot ? sin 2? Discuss
- 5. What is the value of sin 75°+ sin 15° ?
Options- A. ?3
- B. 2?3
- C. ?(3/2)
- D. 3/?2 Discuss
- 6. 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
- 7. Square of (3x ? 5xy) is
Options- A. 9x2 - 30x2y + 25x2y2
- B. 9x2 - 15x2y + 25x2y2
- C. 25x2 - 15x2y + 9x2y2
- D. 25x2 - 30x2y + 9x2y2 Discuss
- 8. 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
- 9. If x3 = 62 - 32 , then the value of x is
Options- A. 9
- B. 6
- C. 3
- D. 1 Discuss
- 10. 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
Simplification problems
Search Results
Correct Answer: 1
Correct Answer: 4(cos6 A ? sin6 A)
Correct Answer: 1
Correct Answer: cos 2?
Correct Answer: ?(3/2)
Correct Answer: (?3+4)/2?3
Correct Answer: 9x2 - 30x2y + 25x2y2
Correct Answer: -3
Correct Answer: 3
Correct Answer: x(x + 2) -15 = x(x - 5) + 11
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