A rectangular lamina of sides 20 mm X 25mm has an edge in HP and adjoining edge in VP, is tilted such that the front view appears as a rectangle of 20 mm X 15 mm. The edge which is in VP is 30 mm from the right profile plane. Find its inclinations with the corresponding principal planes.(a) 43.43^o(b) 53.13^o(c) 43.13^o(d) 67.34^oI have been asked this question by my school teacher while I was bunking the class.The above asked question is from Projections of Planes topic in section Orthographic Projection, Projections of Lines, Planes and Solids of Civil Engineering Drawing

A rectangular lamina of sides 20 mm X 25mm has an edge in HP and adjoi

1.	A rectangular lamina of sides 20 mm X 25mm has an edge in HP and adjoining edge in VP, is tilted such that the front view appears as a rectangle of 20 mm X 15 mm. The edge which is in VP is 30 mm from the right profile plane. Find its inclinations with the corresponding principal planes.(a) 43.43^o(b) 53.13^o(c) 43.13^o(d) 67.34^oI have been asked this question by my school teacher while I was bunking the class.The above asked question is from Projections of Planes topic in section Orthographic Projection, Projections of Lines, Planes and Solids of Civil Engineering Drawing
Answer» The CORRECT OPTION is (b) 53.13^o The BEST I can explain: REFERRING the figure below, on measuring the value of φ, INCLINATION is known.

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