In a equilateral triangle r, R and `r_(1)` form (where symbols used have usual meaning)

In an equilateral triangle r:R:r1 is

In an equilateral triangle ABC ,the ratio (R+4r)/(2R-r) has the value (symbols have usual meanings)

In a triangle ABC, if a=4, b=8 and angleC=60^(@) , then : (where symbols used have usual meanings)

Find the dimension of the quantity L/(RCV), where symbols have usual meaning.

Select the incorrect relation. (Where symboles have their usual meanings):-

Derive the relation F=ma , where the symbols have their usual meanings.

In a triangle ABC, if a=13,b=14 and c=15, then angle A is equal to (All symbols used have their usual meaning in a triangle.)