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Trignometry

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29 Apr 2012 23:35:55 IST

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Trignometry

Engineering Entrance , JEE Main , JEE Main & Advanced , Mathematics , Trigonometry

The perimeter of a certain sector of a circle is equal to half that of the circle of which it is a sector. Find the circular measure of the angle of the sector.

a. (π-2) radian

b. (π+2) radian

c. π radian

d. (π-3) radian

Comments (1)

ronnie

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Joined: 18 Feb 2012

Posts: 264

30 Apr 2012 10:33:26 IST

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The perimeter of the sector is 2r+2r π α/2π= πr
solving α= π-2..

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