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SSCCGL Quantitative Aptitude Solved Question Paper 2017

Multiple Choice Questions

71.
If $cot space straight theta space equals space 21 over 20 comma$ then what is the value of cosec θ?

$21 over 29$

$29 over 21$

$20 over 29$

$29 over 20$

$29 over 20$

$cot space straight theta space equals space 21 over 20 space equals space straight B over straight P$
$space space space straight H squared space equals space straight P squared space plus space straight B squared space space space space space space space space space space space equals space left parenthesis 20 right parenthesis squared space plus space left parenthesis 21 right parenthesis squared space space space space space space space space space space space equals space 400 space plus space 441 space equals space 841 therefore space space straight H space equals space square root of 841 space equals space 29$
$cosec space straight theta space equals space straight H over straight P space equals space 29 over 20$

72.

The two equal sides of an isosceles triangle is 20 cm each and the third side is 30 cm. What is the area (in cm²) of the triangle?

$50 square root of 5 space cm squared$
100 cm²
$75 square root of 7 space cm squared$
175 cm²

73.

PQ is the chord of a circle whose centre is O. ROS is a line segment originating from a point R on the circle that intersect PQ produced at point S such that QS = OR. If