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If from a circular sheet of paper of radius 15cm a sector of 144 degree is removed and the remaining is used to make a conical surface, then the angle at the vertex will be 1) sin^(-1)(3/10) 2) sin^(-1)(6/5) 3) 2sin^(-1)(3/5) 4) 2sin^(-1)(4/5)

If from a circular sheet of paper of radius 15cm a sector of 144 degree is removed and the remaining is used to make a conical surface, then the angle at the vertex will be


1) sin^(-1)(3/10)
2) sin^(-1)(6/5)
3) 2sin^(-1)(3/5)
4) 2sin^(-1)(4/5)

Grade:11

1 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
one year ago

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