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AP EAMCET Engineering 21 Apr 2019 Shift 2 Paper

Section: Mathematics
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Question : 28 of 160
 
Marks: +1, -0
Let a triangle ABC be inscribed in a circle of radius 2 units. If the 3 bisectors of the angles A. B and C are extended to cut the circle at A1, B1 and C1 respectively, then the value of
[
AA1cos
A
2
+BB1cos
B
2
+CC1cos
C
2
sinA+sinB+sinC
]2
=
Validate
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