PQRS is a desk of dimensions 2m x 0.8 which is inclined at 3...
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
A.
30o 35'
B.
30o 32'
C.
15o 36'
D.
10o
E.
10o 42'
Correct answer is E
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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