Trigonometry Practice Question and Answer

Q:

यदि cos3A = X, तो X का मान है?

1121 0

  • 1
    4cos3A + 3cosA
    Correct
    Wrong
  • 2
    3cosA – 4cos3A
    Correct
    Wrong
  • 3
    cosA + 4cos3A
    Correct
    Wrong
  • 4
    4cos3A – 3cosA
    Correct
    Wrong
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Answer : 4. "4cos3A – 3cosA"

Q:

1411 0

  • 1
    $$\left(1{75\over119}\right)\ $$
    Correct
    Wrong
  • 2
    $$\left(2{34\over35}\right)\ $$
    Correct
    Wrong
  • 3
    $$\left(3{2\over3}\right)\ $$
    Correct
    Wrong
  • 4
    $$\left(3{1\over7}\right)\ $$
    Correct
    Wrong
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Answer : 4. "$$\left(3{1\over7}\right)\ $$"

Q:

sec4 A (1 – sin4A) – 2tan2A का मान है?

876 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:

यदि  sinθ-cosθ= \({7\over13}\) और  0º <θ<90°, है तो  sinθ+cosθका मान क्या होगा

1125 0

  • 1
    \({17\over13}\)
    Correct
    Wrong
  • 2
    \({13\over17}\)
    Correct
    Wrong
  • 3
    \({1\over13}\)
    Correct
    Wrong
  • 4
    \({1\over17}\)
    Correct
    Wrong
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Answer : 1. "\({17\over13}\)"

Q:


1079 0

  • 1
    cosec A
    Correct
    Wrong
  • 2
    cos A
    Correct
    Wrong
  • 3
    secA
    Correct
    Wrong
  • 4
    sinA
    Correct
    Wrong
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Answer : 3. "secA"

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Answer : 1. "80 मी."

Q:

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

1005 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 tan  $$ -{7π\over4}=x $$ है , तो x का मान क्या है ? 

901 0

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

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