Discussion
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- Question
What is the area of the sector whose central angle is 90° and radius of the circle is 14 cm?
Options- A. 308 sq cm
- B. 77 sq cm
- C. 154 sq cm
- D. 231 sq cm
- Correct Answer
- 154 sq cm
- 1. If 5x - 40 = 3x, then the numerical value of 2x - 11 is
Options- A. 29
- B. 39
- C. 19
- D. 9 Discuss
- 2. If tanA + tanB = X, then the value of X is
Options- A. (tanA - tanB)/(1 + tanAtanB)
- B. (tanA + tanB)/(1 - tanAtanB)
- C. (tanA + tanB)/(1 + tanAtanB)
- D. (tanA - tanB)/(1 - tanAtanB) Discuss
- 3. The line passing through (-2,5) and (6,b) is perpendicular to the line 20x + 5y = 3. Find b?
Options- A. -7
- B. 4
- C. 7
- D. -4 Discuss
- 4. If x2+1x2 = 2 , then the value of x - 1x is
Options- A. -2
- B. 0
- C. 1
- D. -1 Discuss
- 5. tan(A/2) is equal to
Options- A. tanA/(1 + secA)
- B. 1/(cosecA + cotA)
- C. tanA/(1 + cosecA)
- D. 1/(secA + cotA) Discuss
- 6. If cos3A = X, then value of X?
Options- A. 4cos3A - 3cosA
- B. 4cos3A + 3cosA
- C. 3cosA - 4cos3A
- D. cosA + 4cos3A Discuss
- 7. In ?XYZ measure of angle Y is 90 deg. If cosecX = 13/12, and XY = 1cm, then what is the length ( in cm ) of side YZ?
Options- A. 2.6
- B. 1.5
- C. 2.4
- D. 2 Discuss
- 8. XYZ is a right angled triangle and ?Y = 90°. If XY = 2.5 cm and YZ = 6 cm then the circumradius of ?XYZ is
Options- A. 6.5 cm
- B. 3.25 cm
- C. 3 cm
- D. 2.5 cm Discuss
- 9. If x + 1/x = 6, then value of x2 + 1/x2 is
Options- A. 23
- B. 16
- C. 34
- D. 32 Discuss
- 10. If 14/3 + (1/2)(x - 7/3) = -2x/3, then the value of x is?
Options- A. -3
- B. 3
- C. -6
- D. 6 Discuss
Simplification problems
Search Results
Correct Answer: 29
Correct Answer: (tanA + tanB)/(1 - tanAtanB)
Correct Answer: 7
Correct Answer: 0
Correct Answer: tanA/(1 + secA)
Correct Answer: 4cos3A - 3cosA
Correct Answer: 2.4
Correct Answer: 3.25 cm
Correct Answer: 34
Correct Answer: -3
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