Discussion
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- Question
If (1 + cosA)/2 = x, then the value of x is
Options- A. sin(A/2)
- B. ?sin(A/2)
- C. ?cos(A/2)
- D. cos2(A/2)
- Correct Answer
- cos2(A/2)
- 1. If cos 45° - sec 60° = x, then the value of x is
Options- A. (?3-4)/2?3
- B. 1
- C. (1-2?2)/?2
- D. (?3+?2)/2 Discuss
- 2. If secA - tanA = x, then the value of x is
Options- A. 1/(sec2A - tan2A)
- B. 1/(sec2A + tan2A)
- C. 1/?[(sec2A - tan2A)]
- D. 1/(secA + tanA) Discuss
- 3. When a number is increased by 28, it becomes 107% of itself. What is the number?
Options- A. 336
- B. 420
- C. 400
- D. 252 Discuss
- 4. If sin - 4?/3 = x, then the value of x is
Options- A. -2
- B. -2/?3
- C. ?3/2
- D. ?2 Discuss
- 5. The diagonal of a square equals the side of an equilateral triangle. If the area of the square is 12 sq cm, what is the area of the equilateral triangle?
Options- A. 12?3 sq cm
- B. 6?3 sq cm
- C. 12?2 sq cm
- D. 24 sq cm Discuss
- 6. If secA + tanA = x, then the value of x is
Options- A. cosA/(1 + sinA)
- B. ?[cosA/(1 - sinA)]
- C. ?[cosA/(1 + sinA)]
- D. cosA/(1 - sinA) Discuss
- 7. A line passing through the origin perpendicularly cuts the line 3x - 2y = 6 at point M. Find M?
Options- A. (18/13, 12/13)
- B. (18/13, -12/13)
- C. (-18/13, -12/13)
- D. (-18/13, 12/13) Discuss
- 8. Find length of the arc whose central angle is 45° and radius of the circle is 28 cm?
Options- A. 11 cm
- B. 33 cm
- C. 44 cm
- D. 22 cm Discuss
- 9. If (9 - 3x) - (17x - 10) = -1, then the value of x is
Options- A. 1
- B. -1
- C. 9/10
- D. -0.9 Discuss
- 10. If a - b = -7 and a2+ b2= 85 , then find ab.
Options- A. 18
- B. -30
- C. -44
- D. 60 Discuss
Simplification problems
Search Results
Correct Answer: (1-2?2)/?2
Correct Answer: 1/(secA + tanA)
Correct Answer: 400
Correct Answer: ?3/2
Correct Answer: 6?3 sq cm
Correct Answer: cosA/(1 - sinA)
Correct Answer: (18/13, -12/13)
Correct Answer: 22 cm
Correct Answer: 1
Correct Answer: 18
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