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Eamcet Mathematics
Trigonometry Properties of Triangles
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Q.
In triangle ABC, (b+c)cosA+(c+a)cosB+(a+b)cosC=
A.
0
B.
1
C.
a+b+c
D.
2(
a+b+c
)
E.
None of the above
View Answer
Correct choice: C
Explanation:
(b+c) cos A + (c+a) cos B + (a+b)cos C = a+b+c.
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