If a,b,c are three consecutive vectors forming a triangle, then a + b + c is

" If "a,b,c" are three consecutive terms of an "AP" and "x,y,z" are three consecutive terms of a GP,then the value of "x^(b-c)*y^(c-a)*z^(a-b)" is "

If a,b, and c are three consecutive terms of an A.P, prove that k^(a),k^(b) and k^(c) are three consecutive terms of a G.P. Assume k to be a non zero real number.

If a,b,c are the position vectors of the vertices of /_ABC, then area of the triangle is

Using vectors: Prove that if a,b,care the lengths of three sides of a triangle then its area Delta is given by Delta=sqrt(s(s-a)(s-b)(s-c)) where 2s=a+b+c