Discussion
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- Question
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°
- Correct Answer
- 75°
- 1. 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
- 2. If x2-2x+1=0, then the value of x4+1x4 is
Options- A. 0
- B. 1
- C. 2
- D. 3 Discuss
- 3. If a+b=5 then the value of a-37+b-27 is
Options- A. 27
- B. 37
- C. 1
- D. 0 Discuss
- 4. 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
- 5. What is the simplified value of sin2(90??)?[sin(90??)sin?/tan?] ?
Options- A. 1
- B. cosec ?
- C. 0
- D. cos ? Discuss
- 6. In an acute-angled triangle ABC is Sin(B+A+C)= 32 and tan(C+A-B)=1, then C is equal to
Options- A. 37.5°
- B. 67.5°
- C. 52.5°
- D. 72.5° Discuss
- 7. If SinX-CosX=1, where 'X' is an acute angle, the value of SinX+CosX is
Options- A. 0
- B. 1
- C. 1/2
- D. 2 Discuss
- 8. If (x ? 2) and (x + 3) are the factors of the equation x2 + k1x + k2 = 0 , then what are the values of k1 and k2?
Options- A. k1 = 6, k2 = ? 1
- B. k 1 = 1, k 2 = ? 6
- C. k 1 = 1, k2 = 6
- D. k1 = ? 6, k2 = 1 Discuss
- 9. If (x ? y) = 7, then what is the value of (x ? 15)3 ? (y ? 8)3 ?
Options- A. 0
- B. 343
- C. 392
- D. 399 Discuss
- 10. If x ? y ? ?18 = ?1 and x + y ? 3?2 = 1, then what is the value of 12xy(x2 ? y2) ?
Options- A. 0
- B. 1
- C. 512?2
- D. 612?2 Discuss
Simplification problems
Search Results
Correct Answer: 144?3 sq. cms
Correct Answer: 1
Correct Answer: 0
Correct Answer: cot A
Correct Answer: 0
Correct Answer: 52.5°
Correct Answer: 1
Correct Answer: k 1 = 1, k 2 = ? 6
Correct Answer: 0
Correct Answer: 612?2
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