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- Question
The sum of 2xy(3x + 4y - 5z) and 5yz(2x - 3y) is
Options- A. 6x2y - 8xy2 + 15y2z
- B. 6x2y + 8xy2 - 15y2z
- C. 6x2y + 8xy2 - 15y2z - 20xyz
- D. 6x2y - 8xy2 + 15y2z + 20xyz
- Correct Answer
- 6x2y + 8xy2 - 15y2z
- 1. If (1 + secA)/tanA = x, then x is
Options- A. cot(A/2)
- B. tan(A/2)
- C. cosec(A/2)
- D. sec(A/2) Discuss
- 2. If (4x - 5) = (3x - 1), then the numerical value of (x + 4)2
Options- A. 16
- B. 64
- C. 32
- D. 8 Discuss
- 3. If 2(3x + 5) > 4x - 5 < 3x + 2; then x can take which of the following values?
Options- A. 8
- B. 6
- C. -8
- D. -10 Discuss
- 4. What is the value of sin -300°?
Options- A. 1
- B. ?3/2
- C. 1/2
- D. ?3/2 Discuss
- 5. If 51.97 (81.18 - x ) - 59.39 = 5.268, then value of x will be
Options- A. - 24.912
- B. - 68.492
- C. 93.868
- D. 197.808 Discuss
- 6. If (1 - sinA)/(1 + sinA) = x, then x is
Options- A. (cosecA - cotA)2
- B. secA - tanA
- C. (secA - tanA)2
- D. cosecA - cotA Discuss
- 7. An angle is thrice its complementary angle. What is the measure of the angle?
Options- A. 22.5°
- B. 135°
- C. 45°
- D. 67.5° Discuss
- 8. If cos?/4c - tan?/4c = x, then x is
Options- A. (?3+4)/2?3
- B. (2?2-1)/2
- C. (1-?2)/?2
- D. 5/?3 Discuss
- 9. Simplify (b5x2a3z4)*(b3x2a4z5) / (a2b3z2)
Options- A. b5x4a5z5
- B. b5x4a5z7
- C. b5x4a4z7
- D. b4x4a5z7 Discuss
- 10. If tanA = x, then x is
Options- A. ?(cosec2A + 1)
- B. ?(sec2A + 1)
- C. ?(cosec2A - 1)
- D. ?(sec2A - 1) Discuss
Simplification problems
Search Results
Correct Answer: cot(A/2)
Correct Answer: 64
Correct Answer: 6
Correct Answer: ?3/2
Correct Answer: 93.868
Correct Answer: (secA - tanA)2
Correct Answer: 67.5°
Correct Answer: (1-?2)/?2
Correct Answer: b5x4a5z7
Correct Answer: ?(sec2A - 1)
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