NDA MATHS QUESTION BANK

(sacavldel) #1

  1. If A=^ , then what is the


value of^


(^)
?^
(a) - 1 (b) 1 (c)^ (d) 3



  1. If cot Ѳ=2 cos Ѳ, where
    .^ /<Ѳ<π, then what is the value of


Ѳ?


(a)^ π (b)^ π (c)^ π (d)^ π




  1. The value of 3 (^0).^ /
    ( ) 1 - 20.^ /
    ( ) 1 is equal to:
    (a) 0 (b) 1 (c) 3 (d) sin 4α+sin 6α




  2. The expression
    is equal to:
    (a) (b) ≤2 (c) ≥- 2 (d) none of
    these




  3. If cos Ѳ=^. /, then
    .^
    /^ is equal to:^
    (a) sin 2Ѳ (b) cos 2Ѳ (c) tan 2Ѳ
    (d) sec 2Ѳ




  4. If sin A=^ and cos B= - ,




where A and B lie in the first and
third quadrant respectively, then
cos (A+B) is equal to:


(a)^ (b) - (c)^ (d) -



  1. If tan α= and tan β= ,


then α+β is equal to:
(a) π (b) π (c) π (d) none of these



  1. If x lies in 2nd quadrant, then
    √ √
    √^ √^ is equal to:^
    (a) sin^ (b) tan^ (c) sec^ (d)
    cosec

  2. If A, B, C, D are the angles of a
    cyclic quadrilateral, then cos A +
    cos B + cos C + cos D is equal to:
    (a) 2(cos A + cos C) (b) 2(cos A +
    cos B) (c) 2(cos A + cos D) (d) 0

  3. If cos (α+β)=^ , sin (α-β)=
    and α, β lies between 0 and^ , then
    tan 2α is equal to:
    (a)^ (b)^ (c)^ (d) none of
    these

  4. If x cos Ѳ= y cos. /= z
    cos. /, then the value of


is equal to:^
(a) 1 (b) 2 (c) 0 (d) 3 cos Ѳ


  1. If cot Ѳ= and Ѳ lies in the 3rd
    quadrant, then what is (2 sin Ѳ + 3
    cos Ѳ) equal to?
    (a) - 4 (b) - for some odd prime
    p (c). / where p is an odd
    prime and q is a positive integer
    with.^ / not an integer (d) –p for
    some odd prime p

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