Question

calculate moment of inertia of
angle section 100 x 80 x 10 mm
about an axis passing through the centroid and paralle to shorter length
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Answer 1

Answer:

In geometry, the tangent line (or simply tangent) to a plane curve at a given point is the straight line that "just touches" the curve at that point. Leibniz defined it as the line through a pair of infinitely close points on the curve. ... The word "tangent" comes from the Latin tangere, "to touch"