In `Delta ABC` with usual notation,`(c-b cos A)/(a)` is equal to

In DeltaABC with usual notation, (c-b cos A)/(a) is equal to

The any DeltaABC under usual notation ,a(bcos C-c cosB) is equal to

In a Delta ABC with usual notations, if (a)/(cos A)=(b)/(cos B)=(c )/(cos C) , then the triangle is :

Given (b+c)/(11) = (c+a)/(12) = (a+b)/(13) for a Delta ABC with usual notation. If (cos A)/(alpha) = (cos B)/(beta) = (cos C)/(gamma) , then the ordered triad (alpha, beta, gamma) has a value:

In DeltaABC , with usual notations, if cosA=(sinB)/(sinC) , then the triangle is

In Delta ABC with usual notation,if R^(2)(sin A sin B+sin B sin C+sin C sin A)=3, then The minimum value of (a^(2)+b^(2)+c^(2)) is

In a /_\ABC with usual notations a=3, b=4, c=5 then inradius is equal to

In a DeltaABC ,with usual notations, (a)/(3)=(b)/(4)=(c)/(5) then triangle is

In Delta ABC , with usual notations prove that : b^(2) = c^(2) +a^(2) - 2 ca cos B .