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51. The product os1° cos2° cos3° cos° ..... cos 100° is equal to
  A.  −1
  B.  1/4
  C.  1
  D.  0
     
   
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52. If 2(cos2θ − sin2θ) = 1 (θ is a positive acute angle), then cot θ is equal to
  A.  −√3
  B.  1/√3
  C.  1
  D.  √3
     
   
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53. If tan(2θ + 45°) = cot 3θ where (2θ + 45° ) and 3θ are acute angles, then the value of θ is
  A.  5°
  B.  9°
  C.  12°
  D.  15°
     
   
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54. If sec2θ + tan2θ = 7/12, then sec4θ & minus; tan4θ
  A.  7/12
  B.  1/2
  C.  5/12
  D.  1
     
   
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55. -----------------------------------------------------------------------------
  A.  t
  B.  V
  C.  Vt
  D.  t
     
   
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56. =================
  A.  8
  B.  9
  C.  0
  D.  5
     
   
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57. ________________
  A.  v
  B.  Bv
  C.  B
  D.  Sv
     
   
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58. ________________
  A.  Mi
  B.  Mn
  C.  en
  D.  s=
     
   
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59. ------------------------------------
  A.  S
  B.  i
  C.  G
  D.  Sm
     
   
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60. ----------------------------------------
  A.  9
  B.  R9
  C.  0
  D.  R79
     
   
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