Find the angle between the lines whose direction ratios are a,b,c and b-c,c-a,a-b.

The line joining the points (-2,1,-8)a n d(a ,b ,c) is parallel to the line whose direction ratios are 6,2,a n d3. Find the values of a ,b and c

A straight line L on the xy-plane bisects the angle between O Xa n dO Ydot What are the direction cosines of L ? a. > b. > c. > d. >

In triangle A B C ,a , b , c are the lengths of its sides and A , B ,C are the angles of triangle A B Cdot The correct relation is given by (a) (b-c)sin((B-C)/2)=acosA/2 (b) (b-c)cos(A/2)=as in(B-C)/2 (c) (b+c)sin((B+C)/2)=acosA/2 (d) (b-c)cos(A/2)=2asin(B+C)/2

' I ' is the incentre of triangle A B C whose corresponding sides are a , b ,c , rspectively. a vec I A+b vec I B+c vec I C is always equal to a. vec0 b. (a+b+c) vec B C c. ( vec a+ vec b+ vec c) vec A C d. (a+b+c) vec A B

Using the property of determinants and without expanding {:[( a-b,b-c, c-a),( b-c,c-a,a-b),( c-a,a-b,b-c)]:} =0

If (a,a+b, a+b+c) is one set of direction ratios of the line joining (1,0,0) and (0,1,0) then find a set of values of a , b , c .

Find the angle A in triangle ABC, if angle B=60^∘ and angle c=70^∘

find the potential difference between th point A and B and between the point B and C of figure in steady state.