Trigonometry Practice Question and Answer

Q:

рдпрджрд┐ sin2╬╕ - 3sin╬╕ + 2=0, рд╣реИ рддреЛ┬а╬╕(00тЙд ╬╕тЙд900) рдХрд╛ рдорд╛рди рдЬреНрдЮрд╛рдд рдХреАрдЬрд┐рдП

386 0

  • 1

    450

    Correct
    Wrong
  • 2

    00

    Correct
    Wrong
  • 3

    600

    Correct
    Wrong
  • 4

    900

    Correct
    Wrong
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Answer : 4. "

900

"

Q:

рд╡реНрдпрдВрдЬрдХ рдХрд╛ рдорд╛рди рдХреНрдпрд╛ рд╣реЛрдЧрд╛
┬аcos 2A cos2B+sin2(A-B)-sin2(A+B)?

452 0

  • 1
    sin(2A-2B)
    Correct
    Wrong
  • 2
    cos(2A+2B)
    Correct
    Wrong
  • 3
    cos(2A-2B)
    Correct
    Wrong
  • 4
    sin(2A+2B)
    Correct
    Wrong
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Answer : 2. "cos(2A+2B)"

Q:

рдпрджрд┐┬а$$ cosec╬╕ + cot╬╕ =p $$ рд╣реИ, рддреЛ┬а$${p^2-1}\over{p^2+1}$$ ┬ардХрд╛ рдорд╛рди рд╣реИ:

394 0

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

Q:

tan 270 tan340 + tan340 tan290┬а+ tan290 tan270┬ардХрд╛ рдорд╛рди рдЬреНрдЮрд╛рдд рдХреАрдЬрд┐рдПред

410 0

  • 1
    1
    Correct
    Wrong
  • 2
    -1
    Correct
    Wrong
  • 3
    0
    Correct
    Wrong
  • 4
    тИЪ3
    Correct
    Wrong
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Answer : 1. "1"

Q:

рдпрджрд┐ 4sin2╬╕=3(1+cos╬╕),00<╬╕<900, рд╣реЛ рддреЛ (2tan╬╕+4sin╬╕-sec╬╕)┬ардХрд╛ рдорд╛рди рдХреНрдпрд╛ рд╣реИ?

427 0

  • 1
    $$3\sqrt {15}-4$$
    Correct
    Wrong
  • 2
    $$15\sqrt {3}-4$$
    Correct
    Wrong
  • 3
    $$15\sqrt {3}+4$$
    Correct
    Wrong
  • 4
    $$4\sqrt {15}-3$$
    Correct
    Wrong
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Answer : 1. "$$3\sqrt {15}-4$$"

Q:

$${sin23^0cos67^0+sec52^0sin38^0+cos23^0sin67^0+cosec52^0cos38^0}\over cosec^220^0-tan^270^0$$ рдХрд╛ рдорд╛рди рд╣реИ

371 0

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

Q:

$${tan╬╕тИТsec╬╕+1\over tan╬╕+sec╬╕-1}$$ рдХрд╛ рдорд╛рди рдХреНрдпрд╛ рд╣реИ

584 0

  • 1
    sec╬╕+tan╬╕
    Correct
    Wrong
  • 2
    $${1+sin╬╕\over cos╬╕}$$
    Correct
    Wrong
  • 3
    2 sec╬╕
    Correct
    Wrong
  • 4
    $${cos╬╕ \over 1+sin╬╕ }$$
    Correct
    Wrong
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Answer : 4. "$${cos╬╕ \over 1+sin╬╕ }$$"

Q:

рдпрджрд┐ $${(2cos^3 A-cosA)\over (sin A- 2 sin^3 A)=1}$$ рддреЛ A рдХрд╛ рдорд╛рди рдХреНрдпрд╛ рд╣реИ?

672 0

  • 1

    900

    Correct
    Wrong
  • 2

    300

    Correct
    Wrong
  • 3

    450

    Correct
    Wrong
  • 4

    600

    Correct
    Wrong
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Answer : 3. "

450

"

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