Trigonometry Practice Question and Answer

Q:

If  $$ {cosAcotA \over( 1 - sinA ) }=x $$ then the value of x is : 

1739 0

  • 1
    1 - cosecA
    Correct
    Wrong
  • 2
    1 + cosecA
    Correct
    Wrong
  • 3
    1 + secA
    Correct
    Wrong
  • 4
    1 - secA
    Correct
    Wrong
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Answer : 2. "1 + cosecA "

Q:

If sec -5π/4 = x, then  the value   of x is

1729 0

  • 1
    -1/√3
    Correct
    Wrong
  • 2
    -√2
    Correct
    Wrong
  • 3
    -1
    Correct
    Wrong
  • 4
    √3
    Correct
    Wrong
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Answer : 2. "-√2"

Q:

If Cos A + Cos2 A = 1, then Sin2 A + Sin4 A=?

1723 0

  • 1
    0
    Correct
    Wrong
  • 2
    1
    Correct
    Wrong
  • 3
    $$ {1\over 2}$$
    Correct
    Wrong
  • 4
    -1
    Correct
    Wrong
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Answer : 2. "1"

Q:

The value of sec4 A (1 – sin4A) – 2tan2A is: 

1711 0

  • 1
    $$ {1\over 2} $$
    Correct
    Wrong
  • 2
    0
    Correct
    Wrong
  • 3
    2
    Correct
    Wrong
  • 4
    1
    Correct
    Wrong
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Answer : 4. "1"

Q:

If $$ {secθ+tanθ\over secθ - tanθ} $$= $$ 2{51\over 79} $$ sinθ then the value of sin θ is :

1710 0

  • 1
    $$ {91\over144}$$
    Correct
    Wrong
  • 2
    $$ {39\over72}$$
    Correct
    Wrong
  • 3
    $$ {65\over144}$$
    Correct
    Wrong
  • 4
    $$ {35\over72}$$
    Correct
    Wrong
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Answer : 3. "$$ {65\over144}$$"

Q:

What is the value of $${tanθ−secθ+1\over tanθ+secθ-1}$$

1705 0

  • 1
    secθ+tanθ
    Correct
    Wrong
  • 2
    $${1+sinθ\over cosθ}$$
    Correct
    Wrong
  • 3
    2 secθ
    Correct
    Wrong
  • 4
    $${cosθ \over 1+sinθ }$$
    Correct
    Wrong
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Answer : 4. "$${cosθ \over 1+sinθ }$$"

Q:

(secA – 1)/(secA + 1) is equal to?

1696 0

  • 1
    (1 – sinA)/(1 + sinA)
    Correct
    Wrong
  • 2
    (1 – cosA)/(1 + cosA)
    Correct
    Wrong
  • 3
    (1 + cosA)/(1 – cosA)
    Correct
    Wrong
  • 4
    (1 + sinA)/(1 – sinA)
    Correct
    Wrong
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Answer : 2. "(1 – cosA)/(1 + cosA)"

Q:

If $$ sin(θ+30^0)= {3\over \sqrt { 12} }  $$ then find cos2θ : 

1691 0

  • 1
    $$ {1\over 4} $$
    Correct
    Wrong
  • 2
    $$ {3\over 4} $$
    Correct
    Wrong
  • 3
    $${\sqrt { 3} \ }\over 2 $$
    Correct
    Wrong
  • 4
    $$ {1\over 2} $$
    Correct
    Wrong
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Answer : 2. "$$ {3\over 4} $$"

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