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PQRS is a desk of dimensions 2m x 0.8 which is inclined at 30o to the horizontal. Find ...



PQRS is a desk of dimensions 2m x 0.8 which is inclined at 30o to the horizontal. Find the inclination of the diagonal PR to the horizontal
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  • A 30o 35'
  • B 30o 32'
  • C 15o 36'
  • D 10o
  • E 10o 42'
Correct Answer: Option E
Explanation:
tan\(\theta\) = \(\frac{0.8}{2}\) = (0.4)

\(\theta\) = tan-1(0.4)

From the diagram, the inclination of the diagonal PR to the horizontal is 10o 42'

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