ile is
ith 50m/s at an angle of 37° find the time of ascent,
If two vectors 21 +j+k and i + aj +3K are perpendicular to each other then find the
iv.
magnitude of a
V.
If the error in the measurement of radius of a
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Answer:
Let
A
=2
i
^
+3
j
^
−
k
^
and
B
=−4
i
^
−6
j
^
+λ
k
^
A
and
B
are parallel to each other
b
1
a
1
=
b
2
a
2
=
b
3
a
3
i.e.
−4
2
=
−6
3
=−
λ
−1
⇒λ=2.
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