Subject

Quantitative Aptitude

Class

SSCCGL Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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131.

If ABCD is a cyclic parallelogram, then the angle straight A is

  • 60 degree
  • 80 degree
  • 90 degree
  • 90 degree


C.

90 degree

As we all know, the sum of opposite angles of cyclic quadrilateral is 180 degree.



i.e.  angle straight A plus angle straight C equals space space 180 degree
and angle straight B plus angle straight D space equals space 180 degree
But ABCD is a cyclic parallelogram
∴   angle straight A space equals space angle straight C space equals space 90 degree

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132.

AC is a chord of circle whose centre is at O. If B is any point on the arc AC and angle OCA space equals space 20 degree, then the magnitude of  angle ABC is

  • 100 degree
  • 40 degree
  • 140 degree
  • 140 degree
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133.

The coordinates of the vertices of a right angled triangle are P(3, 4), Q(7, 4) and R(3, 8), the right angle being at P. The coordinates of the orthocentre of increment PQR are

  • (3, 4)

  • (7, 4)

  • (3, 8)

  • (3, 8)

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134.

The value of left parenthesis secθ space plus space cosecθ right parenthesis spacewhen straight theta space equals space 45 degree is

  • 3 square root of 2
  • 4 square root of 2
  • 2 square root of 2
  • 2 square root of 2
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135. fraction numerator tan squared straight theta over denominator secθ plus 1 end fraction minus secθ is equal to
  • -1

  • 1

  • 0

  • 0

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136. sin to the power of 6 straight theta plus cos to the power of 6 straight theta is equal to 
  • 1 minus 3 sin squared θcos squared straight theta
  • 1 minus 3 sinθ space cosθ
  • 1 plus 3 sin squared θcos squared straight theta
  • 1 plus 3 sin squared θcos squared straight theta
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137.

If tanθ plus cotθ space equals space 2 comma space space space 0 less than straight theta less than 90 degree comma then the value of straight theta is

  • 30 degree
  • 45 degree
  • 60 degree
  • 60 degree
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138.

The expression of 1 plus fraction numerator cot squared straight A over denominator 1 plus cosecA end fraction is equal to

  • sin A

  • cos A

  • tan A

  • tan A

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139.

The shadow of a tower standing on a level ground is found to be 40 m longer when the sun's altitude is 30 degree, then when it is 60 degree. Find the length of the tower.

  • 10 m

  • 10 square root of 3 straight m
  • 20 m

  • 20 m

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140.

The length of a shadow of a tower is 9 m when the sun's altitude is 30 degree. What is the height of the tower?

  • 4 1 half straight m
  • 9 square root of 3 straight m
  • fraction numerator 9 square root of 3 over denominator 2 end fraction straight m
  • fraction numerator 9 square root of 3 over denominator 2 end fraction straight m
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