[" In "/_ABC," if "A-B=120^(@)," and "R=8r" where "R" and "],[r" have their usual meaning then "8cos C" is "],[" equal to "]

In triangle ABc, if A-B=120^(@) and R=8r where R r have their usual meaning then cos C equals

In triangle ABC, if A - B = 120^(2) and R = 8r , where R and r have their usual meaning, then cos C equals

In triangle ABC, if A - B = 120^(2) and R = 8r , where R and r have their usual meaning, then cos C equals

In triangle ABC, if A - B = 120 and R = 8r , where R and r have their usual meaning, then cos C equals

In triangle ABC, if A-B=120^(@) and R=8r, where R and r have their usual meanings,then cos C equal (a) (3)/(4) (b) (2)/(3)(c)(5)/(6) (d) (7)/(8)

In triangle ABC, if A-B=120^@ and R=8r, where R and r have their usual meanings, then cos C equal (a) 3/4 (b) 2/3 (c) 5/6 (d) 7/8

Show that a + r +1=1 where symbols have their usual meaning.

If the symbols have their usual meanings , (GM)/(R^(2)) is equal to

In a Delta ABC If A-B= 120^(@) ,R=8r then 8cos C=

In A B C , if r\ : r_1: R=2\ : 12\ :5, where all symbols have their usual meaning, then A B C is an acute angled triangle A B C is an obtuse angled triangle A B C is right angled which is not isosceles A B C is isosceles which is not right angled