Discussion
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- Question
What is the value of ( 1/3 - cot60°) ?
Options- A. (2-?3)/2?3
- B. (?2-1)/?2
- C. (1-?3)/3
- D. (?3-4)/2?3
- Correct Answer
- (1-?3)/3
- 1. Sumit and Amit undertook a work for Rs 7200. Sumit alone can do the work in 5 days and Amit alone can do the work in 4 days. If they work together,then what will be the difference (in Rs.) in the amount they receive?
Options- A. 800
- B. 1600
- C. 1200
- D. 1400 Discuss
- 2. What is the value of the expression a3 - 5 + 2816a , when a = 2?
Options- A. 2
- B. 5
- C. 7
- D. 8 Discuss
- 3. What is the value of sec2? + 1sec2? - 1 x 12cot? - tan? ?
Options- A. 0
- B. 1
- C. cosec ?
- D. sec ? Discuss
- 4. A tower stands on the top of a building which is 40 metres high. The angle of depression of a point situated on the ground from the top and bottom of the tower are found to be 60 and 45 deg respectively. What is the height (in metres) of tower?
Options- A. 20?3
- B. 30(?3 + 1)
- C. 40(?3 ? 1)
- D. 50(?3 ? 1) Discuss
- 5. What is the value of cos (90 ? B) sin (C ? A) + sin (90 + A) cos (B + C) ? sin (90 ? C) cos (A + B)?
Options- A. 1
- B. sin ( A + B ? C)
- C. cos ( B + C ? A)
- D. 0 Discuss
- 6. ? XYZ is right angled at Y. If tanX = 15/8, then what is the value of sinZ ?
Options- A. 15/17
- B. 17/8
- C. 17/15
- D. 8/17 Discuss
- 7. If cot(A/2) = x, then the value of x is
Options- A. ?[(1 + cosA)/(1 - cosA)]
- B. cosecA - cotA
- C. ?[(1 - cosA)/2]
- D. ?[(1 + cosA)/2] Discuss
- 8. If (1 - cosA)/(1 + cosA) = x, then the value of x is
Options- A. (cotA + cosecA)2
- B. (cotA - cosecA)2
- C. cotA - cosecA
- D. cotA + cosecA Discuss
- 9. Find equation of the perpendicular bisector of segment joining the points (2,6) and (4,0)?
Options- A. x + 3y = 6
- B. x + 3y = -6
- C. x - 3y = -6
- D. x - 3y = 6 Discuss
- 10. Coefficient of x in (x + 8)(6 - 3x) is
Options- A. 18
- B. 30
- C. -18
- D. -30 Discuss
Simplification problems
Search Results
Correct Answer: 800
Correct Answer: 7
Correct Answer: 1
Correct Answer: 40(?3 ? 1)
Correct Answer: 0
Correct Answer: 8/17
Correct Answer: ?[(1 + cosA)/(1 - cosA)]
Correct Answer: (cotA - cosecA)2
Correct Answer: x + 3y = -6
Correct Answer: -18
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