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  • Question
  • What is the value of sec2? + 1sec2? - 1 x 12cot? - tan? ?


  • Options
  • A. 0
  • B. 1
  • C. cosec ?
  • D. sec ?

  • Correct Answer


  • Tags: Bank Exams

    Simplification problems


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    • 1. 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
    • 2. 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
    • 3. 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
    • 4. What is the value of sin (630 + A) + cos A?

    • Options
    • A. ?3/2
    • B. 1/2
    • C. 0
    • D. 2/?3
    • Discuss
    • 5. What is the value of tan?4+A×tan3?4+A ?

    • Options
    • A. 1
    • B. 0
    • C. cot A/2
    • D. ? 1
    • Discuss
    • 6. What is the value of the expression a3 - 5 + 2816a , when a = 2?

    • Options
    • A. 2
    • B. 5
    • C. 7
    • D. 8
    • Discuss
    • 7. Sumit and Amit undertook a work for Rs 7200. Sumit alone can do the work in 5 days and Amit alone can do the work in 4 days. If they work together,then what will be the difference (in Rs.) in the amount they receive?

    • Options
    • A. 800
    • B. 1600
    • C. 1200
    • D. 1400
    • Discuss
    • 8. What is the value of ( 1/3 - cot60°) ?

    • Options
    • A. (2-?3)/2?3
    • B. (?2-1)/?2
    • C. (1-?3)/3
    • D. (?3-4)/2?3
    • Discuss
    • 9. ? XYZ is right angled at Y. If tanX = 15/8, then what is the value of sinZ ?

    • Options
    • A. 15/17
    • B. 17/8
    • C. 17/15
    • D. 8/17
    • Discuss
    • 10. If cot(A/2) = x, then the value of x is

    • Options
    • A. ?[(1 + cosA)/(1 - cosA)]
    • B. cosecA - cotA
    • C. ?[(1 - cosA)/2]
    • D. ?[(1 + cosA)/2]
    • Discuss


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