If →a,→b →c are unit vectors such that →a+→b+→c=→0,then

1.	If →a,→b →c are unit vectors such that →a+→b+→c=→0,then the value of →a.→b+→b.→c+→c.→a is (a) 1 (b) 3 (c) −32 (d) None of these
Answer» $I f \to a, \to b \to c a r e u n i t v e c t o r s s u c h t h a t \to a + \to b + \to c = \to 0, t h e n t h e v a l u e o f \to a . \to b + \to b . \to c + \to c . \to a i s$ (a) 1 (b) 3 (c) $\frac{- 3}{2}$ (d) None of these

If →a,→b →c are unit vectors such that →a+→b+→c=→0,then the value of →a.→b+→b.→c+→c.→a is (a) 1 (b) 3 (c) −32 (d) None of these

Answer»

$I f \to a, \to b \to c a r e u n i t v e c t o r s s u c h t h a t \to a + \to b + \to c = \to 0, t h e n t h e v a l u e o f \to a . \to b + \to b . \to c + \to c . \to a i s$

(a) 1 (b) 3

Discussion

No Comment Found

Related InterviewSolutions

The number of ways of choosing 2 cards from a pack of 52 where atleast one face card is choosen
Let P(3,3) be a point on the hyperbola, x2a2−y2b2=1. If the normal to it at P intersects the x−axis at (9,0) and e is its eccentricity, then the ordered pair (a2,e2) is equal to
P speaks truth in 75% cases while Q in 90%.in what % r they likely to contradict each other in stating the same fact .? Do u think B is true Do
If f(x) has the second order derivative at x = c such that f '(c) = 0 and f ''(c) > 0, then c is a point of _______________.
An A.P. consists of 43 terms, if the sum of five middle-most terms is 195, then the sum of the A.P. is
Find the angle between two vectors a and b with magnitudes √3 and 2 respectively, having a.b=√6
If y={x}[x], then 3∫0y dx is equal to,where {.} and [.] are fractional part function and greatest integer function respectively.
The graph of f(x)=−|log(x−3)|+3 will be
1∫0ex⋅x(1+x)2dx is equal to
What is a set and list all formulas of set.

If →a,→b →c are unit vectors such that →a+→b+→c=→0,then the value of →a.→b+→b.→c+→c.→a is (a) 1 (b) 3 (c) −32 (d) None of these

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment