If `p=tan 8A, q=tan5A,r=tan3A,` then `(p-q-r)/(pqr)=`

If p,q and r are in AP,then prove that (p+2q-r)(2q+r-p)(r+p-q)=4pqr

If tan (A+B)=p, tan(A-B)=q find tan 2A.

If tan(A+B)p and tan(A-B)=q , then show that tan 2A=(p+q)/(1-pq)

If tan(A+B)=p and tan(A-B)=q , then show that tan 2A=(p+q)/(1-pq)

If tan(A+B)=p and tan(A-B)=q , then show that tan2A=(p+q)/(1-pq) .

If p:q=2:3 and q:r=4,:5, then find p:q:r.

Statement I In a triangle ABC if tan A: tan B: tan C=1 :2:3, then A=45^(@) Statement II If p:q:r=1:2:3, then p=1

Statement I In a triangle ABC if tan A: tan B: tan C=1 :2:3, then A=45^(@) Statement II If p:q:r=1:2:3, then p=1

Statement I In a triangle ABC if tan A: tan B: tan C=1 :2:3, then A=45^(@) Statement II If p,q,r=1:2:3, then p=1

If p = -2, q = - 1 and r = 3, find the value of (i) p^(2) + q^(2) - r^(2) (ii) 2p^(2) - q^(2) + 3r^(2) (iii) p - q - r (iv) p^(3) + q^(3) + r^(3) + 3 pqr (v) 3p^(2) q + 5pq^(2) + 2 pqr (vi) p^(4) + q^(4) - r^(4)