PQRS is a desk of dimensions \(2\text{m} \times 0.8\) which is inclined at \(30^\circ\) to the horizontal. Find the inclination of the diagonal PR to the ho...

Assessment: JAMB UTME - Mathematics - 1983 Subject: General Mathematics

Question 1 Report

PQRS is a desk of dimensions \(2\text{m} \times 0.8\) which is inclined at \(30^\circ\) to the horizontal. Find the inclination of the diagonal PR to the horizontal

Answer Details
tan θ  =  0.8 2  = (0.4)

θ  = tan-1(0.4)

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

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