Discussion
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- Question
What is the value of sin (630 + A) + cos A?
Options- A. ?3/2
- B. 1/2
- C. 0
- D. 2/?3
- Correct Answer
- 0
- 1. What is the value of tan?4+A×tan3?4+A ?
Options- A. 1
- B. 0
- C. cot A/2
- D. ? 1 Discuss
- 2. What is the value of [(cos32? + 3 cos 2?)÷(cos6? ? sin6?)] ?
Options- A. 0
- B. 1
- C. 2
- D. 4 Discuss
- 3. What is the value of [(sin 7x ? sin 5x)÷(cos 7x + cos 5x)] ? [(cos 6x ? cos 4x)÷(sin 6x + sin 4x)]?
Options- A. 1
- B. 2 tan x
- C. tan 2 x
- D. tan (3 x/2) Discuss
- 4. In the given figure, AB is a diameter of the circle with center O and XY is the tangent at a point C. If ACX = 35 deg, then what is the value (in deg) of CAB?
Options- A. 45
- B. 35
- C. 55
- D. 65 Discuss
- 5. If (x/a) + (y/b) = 3 and (x/b) ? (y/a) = 9, then what is the value of x/y?
Options- A. ( b + 3 a)/( a ? 3 b)
- B. ( a + 3 b)/( b ? 3 a)
- C. (1 + 3 a)/( a + 3 b)
- D. ( a + 3 b2)/( b ? 3 a2) Discuss
- 6. What is the value of [(sin 59° cos 31° + cos 59° sin 31° )÷(cos 20° cos 25° ? sin 20° sin 25° )]?
Options- A. 1/?2
- B. 2?2
- C. ?3
- D. ?2 Discuss
- 7. What is the value of cos (90 ? B) sin (C ? A) + sin (90 + A) cos (B + C) ? sin (90 ? C) cos (A + B)?
Options- A. 1
- B. sin ( A + B ? C)
- C. cos ( B + C ? A)
- D. 0 Discuss
- 8. A tower stands on the top of a building which is 40 metres high. The angle of depression of a point situated on the ground from the top and bottom of the tower are found to be 60 and 45 deg respectively. What is the height (in metres) of tower?
Options- A. 20?3
- B. 30(?3 + 1)
- C. 40(?3 ? 1)
- D. 50(?3 ? 1) Discuss
- 9. What is the value of sec2? + 1sec2? - 1 x 12cot? - tan? ?
Options- A. 0
- B. 1
- C. cosec ?
- D. sec ? Discuss
- 10. What is the value of the expression a3 - 5 + 2816a , when a = 2?
Options- A. 2
- B. 5
- C. 7
- D. 8 Discuss
Simplification problems
Search Results
Correct Answer: ? 1
Correct Answer: 4
Correct Answer: 2 tan x
Correct Answer: 55
Correct Answer: ( b + 3 a)/( a ? 3 b)
Correct Answer: ?2
Correct Answer: 0
Correct Answer: 40(?3 ? 1)
Correct Answer: 1
Correct Answer: 7
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