In a triangle ABC, If `A=B=120^(@)` and R=8r, then the value of cosC is

In a triangle ABC, A - B =120 ^(@) and R = 8r, then the value of cos C is

In DeltaABC," if " A-B=120^(@) and R=8r , then the value of (1+cosC)/(1-cosC) equals : (All symbols used hav their usual meaning in a triangle)

In DeltaABC," if " A-B=120^(@) and R=8r , then the value of (1+cosC)/(1-cosC) equals : (All symbols used hav their usual meaning in a triangle)

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

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

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 a triangle ABC, if r_(1)+r_(3)+r=r_(2), then find the value of (sec^(2)A+csc^(2)B-cot^(2)C)