Maths Practice Question and Answer

Q:

рдпрджрд┐┬аx+ y=90┬░, ┬ард╣реИ рддреЛ┬а$$ {\sqrt{cosx.cosecy-cosx.siny}}$$┬ардХрд╛ рдорд╛рди рдХреНрдпрд╛ рд╣реЛрдЧрд╛?

1251 0

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

Q:

рдпрджрд┐┬аtan A=n tan B ┬ардФрд░┬аSin A= m Sin B,┬ард╣реИ рддреЛ┬аCos2A┬ардХрд╛ рдорд╛рди рд╣реЛрдЧрд╛ред

1323 0

  • 1
    $$ {m^{2}+1\over {n^{2}+1}}$$
    Correct
    Wrong
  • 2
    $$ {m^{2}+1\over {n^{2}-1}}$$
    Correct
    Wrong
  • 3
    $$ {m^{2}-1\over {n^{2}-1}}$$
    Correct
    Wrong
  • 4
    $$ {m^{2}-1\over {n^{2}+1}}$$
    Correct
    Wrong
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Answer : 3. "$$ {m^{2}-1\over {n^{2}-1}}$$"

Q:

sin222┬░┬а+ Sin268┬░+ Cot2 30┬░┬ардХрд╛ рдорд╛рди рд╣реЛрдЧрд╛ред

1250 0

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

Q:

рджрд┐рдпреЗ рдЧрдпреЗ рдЪрд┐рддреНрд░ рдореЗрдВ┬аBC=15 cm ┬а, Sin B=4/5 ┬ард╣реИ рддреЛ┬аAB┬ардХрд╛ рдорд╛рди рд╣реЛрдЧрд╛ред

1498 0

  • 1
    25 рд╕реЗрдореА
    Correct
    Wrong
  • 2
    20 рд╕реЗрдореА
    Correct
    Wrong
  • 3
    5 рд╕реЗрдореА
    Correct
    Wrong
  • 4
    4 рд╕реЗрдореА
    Correct
    Wrong
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Answer : 1. "25 рд╕реЗрдореА"

Q:

рдпрджрд┐┬а(a-b)=-3 , (b-c)=5 and (c-a)=-2┬ард╣реИ рддреЛ┬а$$ {a^{3}+b^{3}+c^{3}-3abc\over a+b+c}$$┬ардХрд╛ рдорд╛рди рд╣реИред

1460 0

  • 1
    18
    Correct
    Wrong
  • 2
    17
    Correct
    Wrong
  • 3
    10.5
    Correct
    Wrong
  • 4
    20.5
    Correct
    Wrong
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Answer : 2. "17"

Q:

рдпрджрд┐┬а$$ {x=a^{2\over3}-a^{-2\over3}}$$┬а┬ард╣реИ рддреЛ┬а$$ {x^{3}+3x}$$┬ардХрд╛ рдорд╛рди рд╣реИред

1321 0

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

Q:

рдпрджрд┐┬а$$ x=\sqrt{\sqrt{5}+1\over {\sqrt{5}-1}}$$┬а┬ард╣реИ рддреЛ┬а$$ {5x^2-5x-1}$$┬ардХрд╛ рдорд╛рди рд╣реИред

1234 0

  • 1
    0
    Correct
    Wrong
  • 2
    3
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    5
    Correct
    Wrong
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Answer : 3. "4"

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