If A:B=5:6 and B:C=8:9 then A:B:C=

If A:B=3:4 and B:C=2:3 , find A:B:C .

If A:B = 3:5 and B: C = 8:11, find A.C.

If A:B = 2:7 and B:C = 9:13, find A:C.

If a : b=4:5 and b : c=2:3, then a : c (a) 4:3 (b) 8: 15 (c) 8:9 (d) 5:3

The angles A, B and C of a triangle ABC are in arithmetic progression. AB=6 and BC=7. Then AC is :

If a:b=3:5 and b:c=6:7 ,find a:b:c

If A=3B = 5C, find A:B:C.

If in a /_\ ABC, a=6, b=3 and cos(A-B)= 4/5 then (A) C=pi/4 (B) A=sin^-1 2/sqrt(5) (C) ar(/_\ ABC)=9 (D) none of these

If a+b+c=5 and ab+bc+ca=10, then prove that a^(3)+b^(3)+c^(3)-3abc=-25 .

If a+b+c=5 and ab+bc+ca=10 , then prove that a^3+b^3+c^3-3abc=-25 .