In a Δ ABC. with usual notation, match the items in List - I with the items in List - II and choose the correct option. List - I List - II A) r_1r_2 \sqrt(\frac{4R-r_1-r_2}{r_1+r_2}) I) b B) {r_2(r_3+r_1)}/\sqrt{r_1r_2+r_2r_3+r_3r_1} II) a^2,b^2,c^2 are in A.P. C) a/c = \frac{\sin(A-B)}{\sin(B-C)} III) Δ D) bc \cos^2 A/2 IV) R r_1r_2r_3 V) s (s - a)

Correct Answer is : A - III , B - I , C - II , D - V

A - IV , B - III , C - I , D - V

A - V , B - IV , C - III , D - II

A - III , B - I , C - II , D - V

A - IV , B - V , C - II , D - I

AP EAMCET Engineering 20 Apr 2019 Shift 1 Paper

Section: Mathematics

Question : 27 of 160

Marks: +1, -0

In a Δ ABC. with usual notation, match the items in List - I with the items in List - II and choose the correct option.

List - I

List - II

A) r1r2√(

4R−r1−r2

r1+r2

)

I) b

r2(r3+r1)

√r1r2+r2r3+r3r1

II) a2,b2,c2 are in A.P.

sin(A−B)

sin(B−C)

III) Δ

D) bc cos2

IV) R r1r2r3

V) s (s - a)

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