Find the greatest angle of `DeltaABC` if : `a=m, b = n, c = sqrt(m^2 + mn + n^2)`

Find the greatest angle of DeltaABC if : a=2, b = sqrt(6), c = sqrt(3) +1

Find the area of DeltaABC , if a=10, b=7sqrt(2) m and c=45^(@)

If in DeltaABC, a =3, b = 5, c = 7 find the greatest angle.

Find the value of m and n : if : ( 3+ sqrt2 )/( 3- sqrt2) = m + n sqrt2

Find the value of m and n : if : ( 5+ 2sqrt3)/( 7+ 4sqrt3) = m + n sqrt3

If A.M. and G.M. between two numbers is in the ratio m : n then prove that the numbers are in the ratio (m+sqrt(m^2-n^2)):(m-sqrt(m^2-n^2))dot

If A.M. and G.M. between two numbers is in the ratio m : n then prove that the numbers are in the ratio (m+sqrt(m^2-n^2)):(m-sqrt(m^2-n^2))dot

If A.M. and G.M. between two numbers is in the ratio m : n then prove that the numbers are in the ratio (m+sqrt(m^2-n^2)):(m-sqrt(m^2-n^2))

Find the value of theta, " if " m^(2) sin . Pi/2 - n^(2) sin . (3pi)/2 + 2 mn sec theta = (m-n)^(2) , 0 le theta le pi .

If the sine of the angles of DeltaABC satisfy the equation c^(3)x^(3)-c^(2) (a+b+c)x^(2)+lx +m=0 (where a,b,c are the sides of DeltaABC), then DeltaABC is