Trigonometry Practice Question and Answer

Q:

The value of sin222° + Sin268°+ Cot2 30° is:

810 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:

ΔPQR is right angled at Q. If cos P = 3/5, then what is the value of cos R?

807 0

  • 1
    $$ {3\over4}$$
    Correct
    Wrong
  • 2
    $$ {5\over3}$$
    Correct
    Wrong
  • 3
    $$ {4\over5}$$
    Correct
    Wrong
  • 4
    $$ {4\over3}$$
    Correct
    Wrong
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Answer : 3. "$$ {4\over5}$$"

Q:

If Cos A + Cos2 A = 1, then Sin2 A + Sin4 A=?

806 0

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

Q:

$$ {3sin60°-4sin^{3}60°=?}$$

805 0

  • 1
    $$ {2\sqrt{3}}$$
    Correct
    Wrong
  • 2
    $$ {4\sqrt{3}}$$
    Correct
    Wrong
  • 3
    0
    Correct
    Wrong
  • 4
    50
    Correct
    Wrong
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Answer : 3. "0"

Q:

One angle of a triangle is 55°. If the other two angles are in the ratio 9:16, find the angles?

797 1

  • 1
    65° और 115°
    Correct
    Wrong
  • 2
    90° और 160°
    Correct
    Wrong
  • 3
    55°और 165°
    Correct
    Wrong
  • 4
    45° और 80°
    Correct
    Wrong
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Answer : 4. "45° और 80°"

Q:

What is the value of $${\sqrt{1-cosA\over{1+cosA}}}$$?

793 0

  • 1
    cosecA-sinA
    Correct
    Wrong
  • 2
    cosecA+cotA
    Correct
    Wrong
  • 3
    secA-cotA
    Correct
    Wrong
  • 4
    secA+cotA
    Correct
    Wrong
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Answer : 1. "cosecA-sinA"

Q:

If x+ y=90°, then what is  the value of $$ {\sqrt{cosx.cosecy-cosx.siny}}$$?

792 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:

Which of the following simplification value of $$ {(secA-cosA)^{2}}+{(cosecA-sinA)^{2}}-{(cotA-tanA)^{2}}$$ ?

792 0

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

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