In triangle , ,

MATHEMATICS · Subjective · A Level · Mathematics · Trigonometry · Trigonometry

Problem

In triangle

ABC

,

a=5

,

b=4

, and

c=3

. Let

G

be the centroid of the triangle. If

R_1

is the circumradius of triangle

GAB

, find

\frac{a}{65}R_1^2

.

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