TS EAMCET 6-Aug-2021 Shift 2 Question Paper

Section: Mathematics

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Question : 29 of 160

Marks: +1, -0

In any ΔABC,

1+cos(A−B).cos‌C

1+cos(A−C).cos‌B

=

a2+c2
b2+c2
b2+c2
b2+a2
a2+c2
a2+b2
a2+b2
a2+c2

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