Discussion
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- Question
What is the simplified value of sin2(90??)?[sin(90??)sin?/tan?] ?
Options- A. 1
- B. cosec ?
- C. 0
- D. cos ?
- Correct Answer
- 0
- 1. If x2 + (1/x2) = 1 , then what is the value of x48 + x42 + x36 + x30 + x24 + x18 + x12 + x6 + 1 ?
Options- A. -9
- B. 0
- C. 1
- D. 9 Discuss
- 2. If a(a + b + c) = 45, b(a + b + c) = 75 and c(a + b + c) = 105, then what is the value of (a2 + b2 + c2 ) ?
Options- A. 75
- B. 83
- C. 217
- D. 225 Discuss
- 3. If x1/4 + x-1/4 = 2 , then what is the value of x81 + (1/x81) ?
Options- A. -2
- B. 0
- C. 1
- D. 2 Discuss
- 4. If (x2/yz) + (y2/zx) + (z2/xy) = 3 , then what is the value of (x + y + z)3 ?
Options- A. 0
- B. 1
- C. 2
- D. 3 Discuss
- 5. If sin?+cos?sin?-cos?=3, then the value of sin4?-cos4? is
Options- A. 4/3
- B. 3/4
- C. 5/3
- D. 3/5 Discuss
- 6. What is the simplified value of cosec 2A + cot 2A?
Options- A. sec A
- B. sec (A/2)
- C. cot A
- D. cot2 A Discuss
- 7. If a+b=5 then the value of a-37+b-27 is
Options- A. 27
- B. 37
- C. 1
- D. 0 Discuss
- 8. If x2-2x+1=0, then the value of x4+1x4 is
Options- A. 0
- B. 1
- C. 2
- D. 3 Discuss
- 9. The length of a median of an equilateral triangle is 12?3 cms. Then the area of the triangle is
Options- A. 144 sq. cms
- B. 288?3 sq. cms
- C. 144?3 sq. cms
- D. 288sq.cms Discuss
- 10. 0 is the circumference of a triangle ?ABC . The point A and the chord BC are on the opposite side of O. If ?BOC=150° then the value of ?BAC is
Options- A. 65°
- B. 60°
- C. 70°
- D. 75° Discuss
Simplification problems
Search Results
Correct Answer: 1
Correct Answer: 83
Correct Answer: 2
Correct Answer: 0
Correct Answer: 3/5
Correct Answer: cot A
Correct Answer: 0
Correct Answer: 1
Correct Answer: 144?3 sq. cms
Correct Answer: 75°
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