(a) Find the coordinates of the foot of the perpendicular drawn from the point P(0,2,3) to the line ‌

x+3

5

=‌

y−1

2

=‌

z+4

3

.
OR
(b) Three vectors

→

a

,

→

b

and

→

c

satisfy the condition

→

a

+

→

b

+

→

c

=

→

0

Evaluate the quantity µ=

→

a

⋅

→

b

+

→

b

⋅

→

c

+

→

c

⋅

→

a

, if |

→

a

|=3, |

→

b

|=4 and |

→

c

|=2