Trigonometry Practice Question and Answer

Q:

рдпрджрд┐┬аcos3A = X, рддреЛ┬аX рдХрд╛ рдорд╛рди┬ард╣реИ?

1775 0

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

Q:

рдпрджрд┐┬а$$ {\sqrt{3}\ CosA=SinA}$$ ┬ард╣реИ рддреЛ┬аCot A┬ардХрд╛ рдорд╛рди рдЬреНрдЮрд╛рдд рдХреАрдЬрд┐рдП

1767 0

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

Q:

рдпрджрд┐┬а2sin2 ╬╕ тАУ 3 sin ╬╕ + 1 = 0, ┬а╬╕┬ардзрди рдиреНрдпреВрди рд╣реИ,┬арддреЛ┬а╬╕┬ардХреЗ рдорд╛рди рд╣реИ┬а?

1757 0

  • 1
    $$ 30^0, 90^0$$
    Correct
    Wrong
  • 2
    $$ 60^0, 55^0$$
    Correct
    Wrong
  • 3
    $$ 60^0, 45^0$$
    Correct
    Wrong
  • 4
    $$ 45^0, 55^0$$
    Correct
    Wrong
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Answer : 1. "$$ 30^0, 90^0$$"

Q:

рдпрджрд┐┬аcos ╬╕ + sin ╬╕ =m, sec ╬╕ + cosec ╬╕ =n┬ард╣реИ рддреЛ┬аm/n┬ардХрд┐рддрдирд╛ рд╣реИред

1747 0

  • 1
    1
    Correct
    Wrong
  • 2
    sin ╬╕ cos ╬╕
    Correct
    Wrong
  • 3
    sec ╬╕ cosec ╬╕
    Correct
    Wrong
  • 4
    cot ╬╕ tan ╬╕
    Correct
    Wrong
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Answer : 2. "sin ╬╕ cos ╬╕"

Q:

$$ {2tan53┬░\over cot37┬░} -{cot80┬░\over tan10┬░}$$ рдХрд╛ рдорд╛рди рдмрддрд╛рдЗрдП?

1712 0

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

Q:

рдпрджрд┐ A рдФрд░ B рдиреНрдпреВрди рдХреЛрдг рд╣реИ рдФрд░ Sec A =3; Cot B=4, рд╣реИ рддреЛ $$ {Cosec^{2}A}+Sin^{2}B\over {Cot^{2}A+Sec^{2}B}$$ ┬ардХрд╛ рдорд╛рди рд╣реЛрдЧрд╛┬а

1690 0

  • 1
    2
    Correct
    Wrong
  • 2
    $$ {25\over 261}$$
    Correct
    Wrong
  • 3
    $$ {322\over 323}$$
    Correct
    Wrong
  • 4
    $$ {1\over 261}$$
    Correct
    Wrong
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Answer : 3. "$$ {322\over 323}$$"

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

1680 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┬аx cos2300.sin600=$${tan^2{45}^0.sec60^0}\over cosec\ 60^0$$┬ард╣реИ рддреЛ┬аx рдХрд╛ рдорд╛рди рд╣реЛрдЧрд╛┬а?┬а

1667 0

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

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