If `cosA=tanB, cos B=tanC, cosC=tanA,` then sin A is equal to

If cosA=tanB,cosB=tanCand cosC=tanA, Show that sinA=sinB=sinC=2*sin18^o

If (secA-tanA)(secB-tanB)(secC+tanC)=(secA+tanA)(secB+tanB)(secC-tanC) then each side is equal to

tanA +tanB + tanC = tanA tanB tanC if

tanA +tanB + tanC = tanA tanB tanC if

Sin A.cos A.tanA+cosA.sinA.cotA is equal to:

if (secA+tanA)(secB+tanB)(secC+tanC)=(secA-tanA)(secB-tanB) (secC-tanC) Prove that each of the side is equal to +-1.

If A+B+C = pi , then the value of |(sin(A+B+C), sinB,cosC),(-sinB,0,tanA),(cos(A+B),-tanA,0)| is equal to :

If A+B+C=pi, and cosA=cosB*cosC then tanB*tanC has the value equal to

If A+B+C=pi, and cosA=cosB*cosC then tanB*tanC has the value equal to (i)1 (ii)1/2 (iii)2 (iv)3