If Ā= 21+3j - K and B--i-33 + 4k, then projection
of Ā on B will be -
Answers
Answered by
2
Answer:
We're asked to find the angle between two vectors, given their unit vector notations.
To do this, we can use the equation
→
A
⋅
→
B
=
A
B
cos
θ
rearranging to solve for angle,
θ
:
cos
θ
=
→
A
⋅
→
B
A
B
θ
=
arccos
⎛
⎝
→
A
⋅
→
B
A
B
⎞
⎠
where
→
A
⋅
→
B
is the dot product of the two vectors, which is
→
A
⋅
→
B
=
A
x
B
x
+
A
y
B
y
+
A
z
B
z
=
(
2
)
(
1
)
+
(
3
)
(
2
)
+
(
1
)
(
−
4
)
=
4
Similar questions