Discussion
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- Question
If (8x - 4) = (3x + 6), then the numerical value of (x + 1)3 is
Options- A. 3
- B. 9
- C. 27
- D. 81
- Correct Answer
- 27
- 1. What is the value of tan150°?
Options- A. -?3
- B. 1/?3
- C. ?3
- D. -1/?3 Discuss
- 2. If 2x + 5 > 2 + 3x and 2x - 3 ? 4x - 5, then x can take which of the following values?
Options- A. -2
- B. 2
- C. -4
- D. 4 Discuss
- 3. What are the coordinates of the centroid of a triangle, whose vertices are A(2,5), B(4,4) and C(7,3)?
Options- A. (4,-3)
- B. (-1,0)
- C. (-3,-3)
- D. (3,-2) Discuss
- 4. If cot2A - cos2A = x , then value of x is
Options- A. tan2Asec2A
- B. cotAcosA
- C. cot2Acos2A
- D. tanAsecA Discuss
- 5. What is the value of tan3A?
Options- A. (3tanA - tan3A)/(1 - 3tan2A)
- B. (3tanA + tan3A)/(1 + 3tan2A)
- C. (3tanA - tan3A)/(1 + 3tan2A)
- D. (3tanA + tan3A)/(1- 3tan2A) Discuss
- 6. If x = at2 and y = 2at then
Options- A. x2 = 4ay
- B. y2 = 4ax
- C. x2 + y 2 = a2
- D. x 2 - y2 = a 2 Discuss
- 7. If xy+yz+zx = 1, then the value of (1+y2)(x+y)(y+z) ?
Options- A. 2
- B. 3
- C. 4
- D. 1 Discuss
- 8. The value of tan 315° cot ( -405° ) is equal to
Options- A. -1
- B. 1
- C. 0
- D. 2 Discuss
- 9. A box weighs 8.5 kg when full of sand and weighs 5.5 kg when it is half filled with sand . Weight of the empty box is
Options- A. 5 kg
- B. 6 kg
- C. 2.5 kg
- D. 4.5 kg Discuss
- 10. If a+1b=1 and b+1c=1 , then the value of c+1a is
Options- A. 0
- B. 1
- C. -1
- D. 2 Discuss
Simplification problems
Search Results
Correct Answer: -1/?3
Correct Answer: 2
Correct Answer: (3,-2)
Correct Answer: cot2Acos2A
Correct Answer: (3tanA - tan3A)/(1 - 3tan2A)
Correct Answer: y2 = 4ax
Correct Answer: 1
Correct Answer: 1
Correct Answer: 2.5 kg
Correct Answer: 1
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