What is the length of an arc which subtends angle θ (degrees) at the centre in a circle of radius r? A . ( π r θ ) / 180 B . ( π r θ ) / 360 C . ( π r θ ) / 60 D . ( π r θ ) / 90

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What is the length of an arc which subtends angle θ (degrees) at the centre in a circle of radius r?   A  .  (  π  r  θ  )      /    180    B  .  (  π  r  θ  )      /    360    C  .  (  π  r  θ  )      /    60    D  .  (  π  r  θ  )      /    90

unieventos8l9 · Accepted Answer

For a slant of       360    ∘   subtended at the centre, the arc length is nothing but the circumference of circle that is 2πr where r is circle radius. For a slant of θ, the arc length will be             θ        360    ×  2      π    r  =            θ        180    ×      π    r.

What is the length of an arc which subtends angle θ (degrees) at the centre...

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