Discussion
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- Question
What is the value of [tan (90 ? A) + cot (90 ? A)]2/[2 sec2(90 ? 2A)] ?
Options- A. 0
- B. 1
- C. 2
- D. ? 1
- Correct Answer
- 2
- 1. What is the value of 1sin490-?+1cos290-? - 1 ?
Options- A. tan2? sec2?
- B. sec4?
- C. tan4?
- D. tan2? sin2? Discuss
- 2. If sec ? (cos ? + sin ?) = ?2, then what is the value of (2 sin ?)/(cos ? ? sin ?)?
Options- A. 3?2
- B. 3/?2
- C. 1/?2
- D. ?2 Discuss
- 3. What is the value of [sin (90? 10?) ? cos (p ? 6?)]/ [cos (p/2 ? 10?) ? sin (p ? 6?)]?
Options- A. tan 2?
- B. cot 2?
- C. cot ?
- D. cot 3? Discuss
- 4. What is the value of {[sin (x + y) ? 2 sin x + sin (x ? y)]/[cos (x ? y) + cos (x + y) ? 2 cos x]} × [(sin 10x ? sin 8x)/(cos 10x + cos 8x)]?
Options- A. 0
- B. tan2x
- C. 1
- D. 2 tan x Discuss
- 5. What is the value of [sin (y ? z) + sin (y + z) + 2 sin y]/[sin (x ? z) + sin (x + z) + 2 sin x]?
Options- A. cos x sin y
- B. (sin y)/(sin x)
- C. sin z
- D. sin x tan y Discuss
- 6. What is the value of {sin (90 ? x) cos [? ? (x ? y)]} + {cos (90 ? x) sin [? ? (y ? x)]}?
Options- A. -cos y
- B. -sin y
- C. cos x
- D. tan y Discuss
- 7. What is the value of 3.6×1.62+0.48×3.61.8×0.8+10.8×0.3-2.16 ?
Options- A. 2.4
- B. 2
- C. 4
- D. 3 Discuss
- 8. If 11+11+11+1x = 58 , then what is the value of x?
Options- A. 2
- B. 3
- C. 1
- D. 4 Discuss
- 9. If 1+121+141+161+181-131-151-17 = 1+ 1x , then what is the value of x?
Options- A. 6
- B. 8
- C. 5
- D. 7 Discuss
- 10. What is the value of 13×7+17×11+111×15+...+1899×903 ?
Options- A. 21/509
- B. 18/403
- C. 25/301
- D. 29/31 Discuss
Simplification problems
Search Results
Correct Answer: tan2? sec2?
Correct Answer: ?2
Correct Answer: cot 2?
Correct Answer: tan2x
Correct Answer: (sin y)/(sin x)
Correct Answer: -cos y
Correct Answer: 3
Correct Answer: 2
Correct Answer: 8
Correct Answer: 25/301
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