Trigonometry Question and Answers Practice Question and Answer

Q:

$$ sec{^4}A(1-sin{^4}A)-2tan{^2}A $$ का मान होगा:

1004 0

  • 1
    $$ {1\over2}$$
    Correct
    Wrong
  • 2
    0
    Correct
    Wrong
  • 3
    2
    Correct
    Wrong
  • 4
    1
    Correct
    Wrong
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Answer : 4. "1"
Explanation :

 Put A=45 degree and we can get answer.

Q:

यदि sin3θ=cos(20° - θ)  है तो θ का मान होगा।

1004 0

  • 1
    40°
    Correct
    Wrong
  • 2
    35°
    Correct
    Wrong
  • 3
    60°
    Correct
    Wrong
  • 4
    30°
    Correct
    Wrong
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Answer : 2. "35°"

Q:

यदि sec -5π/4 = x  है तो x का मान होगा।

1001 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:

$$\left({1\over {sin 60°}} \right)^{2} + (cos 30°)^{2} \over(tan 45°)^{2}$$ का मान ज्ञात कीजिये।

996 0

  • 1
    $$ {25\over 9}$$
    Correct
    Wrong
  • 2
    $$ {25\over 12}$$
    Correct
    Wrong
  • 3
    $$ {25\over 4}$$
    Correct
    Wrong
  • 4
    $$ {5\over 9}$$
    Correct
    Wrong
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Answer : 2. "$$ {25\over 12}$$"

Q:

यदि $$ {cot A={n\over{n+1}}}$$ तथा $$ {cot B={1\over{2n+1}}}$$ तो cot (A + B) का मान क्या है?

986 0

  • 1
    1
    Correct
    Wrong
  • 2
    0
    Correct
    Wrong
  • 3
    -1
    Correct
    Wrong
  • 4
    2
    Correct
    Wrong
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Answer : 3. "-1"

Q:

यदि 2sinθ+ 15 cos2θ=7, 0°˂θ˂90°, है तो तब  $$ {3-tanθ\over 2+tanθ}$$ का मान क्या होगा?

976 0

  • 1
    $$ {1\over 4}$$
    Correct
    Wrong
  • 2
    $$ {3\over 4}$$
    Correct
    Wrong
  • 3
    $$ {1\over 2}$$
    Correct
    Wrong
  • 4
    $$ {5\over 8}$$
    Correct
    Wrong
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Answer : 3. "$$ {1\over 2}$$"

Q:

$$ {\sqrt{(cos^{2}20°+cos^{2}70°)}}$$ का मान ज्ञात कीजिये।

973 0

  • 1
    0
    Correct
    Wrong
  • 2
    $$ {2\over{\sqrt{3}}}$$
    Correct
    Wrong
  • 3
    1
    Correct
    Wrong
  • 4
    $$ {\sqrt{3}\over2}$$
    Correct
    Wrong
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Answer : 3. "1"

Q:

यदि 1 + sin2 A = 3 sin A cos A तो tan A मान ज्ञात कीजिये।

966 0

  • 1
    1, 0
    Correct
    Wrong
  • 2
    1, 1/2
    Correct
    Wrong
  • 3
    1 , 1/3
    Correct
    Wrong
  • 4
    1, 3
    Correct
    Wrong
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Answer : 2. "1, 1/2"

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