Question

7.
* A = 21 +4j-5k the direction of cosines of the vector
4
-5
1
3
(a)
and
and
45 745 545
√45 45
45
2
4
4
c
O and
3 2
45 45
and
he
45​

Answer 1

Answer:

A=21+4j-5k=✓441+16+25=21.95