1. A vector of magnitude two units lies in XY plane. It is inclined at 300 with a positive X-axis and at 600 with a positive Y-axis. Another vector of magnitude 5 units lies
Answers
Answered by
0
Converting the vectors into catesium from
A
=∣
A
∣
i
^
=6
i
^
B
=∣
B
∣[cosθ
i
^
+sinθ
j
^
]=4[cos30
o
i
^
+sin30
o
]
B
=2.(3
i
^
+2
j
^
So,
A
×
B
=
∣
∣
∣
∣
∣
∣
∣
∣
i
^
6
2
3
j
^
0
2
k
^
0
0
∣
∣
∣
∣
∣
∣
∣
∣
=(0.0−2.0)
i
^
+(2
3
.0−6.0)
j
^
+(6.2−2
3
.0)
k
^
=12
k
^
The vector
A
×
B
is 12 magnitude along the normal to the x−y plane.
Similar questions