JAMB - Mathematics (1983 - No. 42)

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

30^o 35'

30^o 32'

15^o 36'

10^o

10^o 42'

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 10^o 42'

JAMB - Mathematics (1983 - No. 42)

Explanation

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