If A,B and C are the angle of a triangle show that `|{:(sin2A,sinC,sinB),(sinC,sin2B,sinA),(sinB,sinA,sin2C):}|=0.`

If A,B and C are the angles of a triangle and |{:(1,1,1),(1+sinA,1+sinB,1+sinC),(sinA+sin^(2)A,sinB+sin^(2)B,sinCsin^(2)C):}| =0 then Delta ABC must be .

If A, B, C are the angle of a triangle and |(sinA,sinB,sinC),(cosA,cosB,cosC),(cos^(3)A,cos^(3)B,cos^(3)C)|=0 , then show that DeltaABC is an isosceles.

Show that: sinAsin(B-C)+sinB sin(C-A)+sinCsin(A-B)=0

If in a triangle ABC , (sinA+sinB+sinC)(sinA+sinB-sinC)=3sinAsinB then

In a Delta ABC, prove that (sinA+sinB)(sinB+sinC)(sinC+sinA)>sinAsinBsinC.

If A,B,C are angles of a triangle, then 2sinA/2cos e c B/2sinC/2-sinAcosB/2-cosA is

In triangle A B C ,(sinA+sinB+sinC)/(sinA+sinB-sinC) is equal to

If A,B,C, are the angles of a triangle such that cot(A/2)=3tan(C/2), then sinA ,sinB ,sinC are in (a) AdotPdot (b) GdotPdot (c) HdotPdot (d) none of these

Prove that: sin(A+2B)sinA-sinBsin(2A+B)sinB=sin(A+B)sin(A-B)

If A, B, C are the angles of a triangle ABC and if cosA=(sinB)/(2sinC) , show that the triangle is isosceles.