Discussion
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- Question
If cot2A - cos2A = x , then value of x is
Options- A. tan2Asec2A
- B. cotAcosA
- C. cot2Acos2A
- D. tanAsecA
- Correct Answer
- cot2Acos2A
- 1. 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
- 2. What is the equation of the line which intercepts xaxis and yaxis at 3/4 and 2/3 respectively?
Options- A. 8x + 9y = 6
- B. 9x + 8y = 12
- C. 8x - 9y = 6
- D. 9x + 8y = -12 Discuss
- 3. If 5 sin2?+ 4 cos2?= 9/2 and 0
Options- A. 1
- B. 0
- C. -1
- D. 1/4 Discuss
- 4. If x+1/x = 2, then the value of x7+2/x6 is equal to?
Options- A. 0
- B. 1
- C. 2
- D. 3 Discuss
- 5. If a+b=3 then the value of a3+b3+9ab-27 is
Options- A. 24
- B. 25
- C. 0
- D. 27 Discuss
- 6. 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
- 7. 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
- 8. What is the value of tan150°?
Options- A. -?3
- B. 1/?3
- C. ?3
- D. -1/?3 Discuss
- 9. If (8x - 4) = (3x + 6), then the numerical value of (x + 1)3 is
Options- A. 3
- B. 9
- C. 27
- D. 81 Discuss
- 10. 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
Simplification problems
Search Results
Correct Answer: (3tanA - tan3A)/(1 - 3tan2A)
Correct Answer: 8x - 9y = 6
Correct Answer: 1
Correct Answer: 3
Correct Answer: 0
Correct Answer: (3,-2)
Correct Answer: 2
Correct Answer: -1/?3
Correct Answer: 27
Correct Answer: y2 = 4ax
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