Discussion
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- Question
If x = a cos?+ b sin? and y = b cos?- a sin?, then x2 + y2 is equal to
Options- A. ab
- B. a2+b2
- C. a2-b2
- D. 1
- Correct Answer
- a2+b2
- 1. The Simplified form of (b3x2a4z3)*(b4x3a3z2)/(a2b4z3) is
Options- A. b2x4a6z
- B. b3x2a4z3
- C. b3x5a5z2
- D. bazx Discuss
- 2. Reflection of the point (-3,6) in the x-axis is
Options- A. (3,6)
- B. (6,-3)
- C. (-3,-6)
- D. (-6,3) Discuss
- 3. A bag has Rs 30.8 in the form of 1 rupee, 50 paise and 10 paise coins in the ratio of 6:3:2. What is the number of 50 paise coins?
Options- A. 8
- B. 24
- C. 12
- D. 4 Discuss
- 4. ABCD is a parallelogram. Co-ordinates of A, B and C are (5,0), (-2,3) and (-1,4) respectively. What will be the equation of line AD?
Options- A. y = 2x - 5
- B. y = x + 5
- C. y = 2x + 5
- D. y = x - 5 Discuss
- 5. [sinA/(1 + cosA)] + [(1 + cosA)/sinA] is equal to
Options- A. 2secA
- B. 2cosecA
- C. 2tanA
- D. 2cotA Discuss
- 6. If x = ?2+1, then the value of x4-1/x4
Options- A. 8?2
- B. 18?2
- C. 6?2
- D. 24?2 Discuss
- 7. If 9x2 + 16y2 = 60 and 3x + 4y = 6, then the value of xy is
Options- A. -1
- B. 1
- C. -2
- D. 2 Discuss
- 8. If cos?1-sin?+cos?1+sin? = 4 , then the value of ? (0°
Options- A. 60°
- B. 45°
- C. 30°
- D. 35° Discuss
- 9. If 3.352 - (9.759 - x ) - 19.64 = 7.052, then what is the value of x?
Options- A. -6.181
- B. 13.581
- C. 33.099
- D. 39.803 Discuss
- 10. Square of (7 - 4x) is
Options- A. 16x2 - 28x + 49
- B. 49 - 28x - 16x2
- C. 49 - 56x - 16x2
- D. 16x2 - 56x + 49 Discuss
Simplification problems
Search Results
Correct Answer: b3x5a5z2
Correct Answer: (-3,-6)
Correct Answer: 12
Correct Answer: y = x - 5
Correct Answer: 2cosecA
Correct Answer: 24?2
Correct Answer: -1
Correct Answer: 60°
Correct Answer: 33.099
Correct Answer: 16x2 - 56x + 49
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