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Bisectors of angles A, B and C of a triangle ABC intersect its circumcircle at D, E and F respectively. Prove that the angles of the triangle DEF are `90o-1/2A` ,`90o-1/2B` and `90o-1/2C`

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`/_5=/_A/2`
Since, angles in same segment at a circle are equal
`/_6=/_B/2`
`/_1=/_B/2`
`/_2=/_C/2`
`/_3=/_A/2`
`/_4=/_C/2`
`In/_DEF`
...
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RD SHARMA ENGLISH-CIRCLE -All Questions
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  2. A B C and A D C are two right triangles with common hypotenuse A Cdot ...

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  14. A B and C D are two parallel chords of a circle such that A B=10c m an...

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  16. A B and C D are two parallel chords of a circle whose diameter is A C ...

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  18. Prove that the line segment joining the mid points of two side of a...

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  20. Prove that the angle in a segment greater than a semi-circle is les...

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