Maths Practice Question and Answer

Q:

From a point in the interior of an equilateral triangle, the length of the perpendiculars to the three sides are 6 cm, 8 cm and 10 cm respectively. The area of the triangle is

397 0

  • 1

    48 cm2

    Correct
    Wrong
  • 2

    16√3 cm2

    Correct
    Wrong
  • 3

    192√3 cm2

    Correct
    Wrong
  • 4

    192 cm2

    Correct
    Wrong
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Answer : 3. "

192√3 cm2

"

Q:

In an isosceles triangle, the measure of each of equal sides is 10 cm and the angle between them is 45°. the area of the triangle is

308 0

  • 1
    $$25 \ cm^2 $$
    Correct
    Wrong
  • 2
    $$ {25\over 2}\sqrt { 2}cm^2 $$
    Correct
    Wrong
  • 3
    $$25 \sqrt { 2} \ cm^2$$
    Correct
    Wrong
  • 4
    $$25 \sqrt { 3} cm^2$$
    Correct
    Wrong
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Answer : 2. "$$ {25\over 2}\sqrt { 2}cm^2 $$"

Q:

The diagonal of a right angle isosceles triangle is 5 cm. Its area will be

375 0

  • 1
    5 sq.cm
    Correct
    Wrong
  • 2
    6.25 sq.cm
    Correct
    Wrong
  • 3
    6.50 sq.cm
    Correct
    Wrong
  • 4
    12.5 sq.cm
    Correct
    Wrong
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Answer : 2. "6.25 sq.cm "

Q:

$$(1+tan θ+secθ)(1+cotθ-cosecθ)\over (sec θ+tan θ)(1-sin θ) $$ is equal to :

544 0

  • 1
    2sec θ
    Correct
    Wrong
  • 2
    2cosec θ
    Correct
    Wrong
  • 3
    cosec θ
    Correct
    Wrong
  • 4
    sec θ
    Correct
    Wrong
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Answer : 1. "2sec θ"

Q:

The graphs of the linear equations 3x-2y=8 and 4x+3y=5 interest at the point P(α, β). What is the value of (2 α - β)?

401 0

  • 1
    3
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    6
    Correct
    Wrong
  • 4
    5
    Correct
    Wrong
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Answer : 4. "5"

Q:

If x2+4y2=17 and xy=2, where x>0,y>0, then what is the value of x3+8y3?

458 0

  • 1
    95
    Correct
    Wrong
  • 2
    85
    Correct
    Wrong
  • 3
    65
    Correct
    Wrong
  • 4
    76
    Correct
    Wrong
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Answer : 3. "65"

Q:

if a+b+c=7 and a3+b3+c3-3abc=175, then what is the value of (ab+bc+ca)?

474 0

  • 1
    8
    Correct
    Wrong
  • 2
    9
    Correct
    Wrong
  • 3
    7
    Correct
    Wrong
  • 4
    6
    Correct
    Wrong
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Answer : 1. "8"

Q:

$$ secA(secA+tanA)(1-sinA)\over (cosec^2A-1)sin^2A$$ is equal to:

381 0

  • 1
    cotA
    Correct
    Wrong
  • 2
    cosA
    Correct
    Wrong
  • 3

       sec2A

    Correct
    Wrong
  • 4

      cos2A

    Correct
    Wrong
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Answer : 3. "

   sec2A

"

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