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Byju's Answer
Standard X
Mathematics
Componendo and Dividendo
Show that a...
Question
Show that
→
a
×
→
b
=
→
a
×
→
c
may not imply that
→
b
=
→
c
.
Open in App
Solution
(
→
a
×
→
b
)
=
→
a
×
→
c
⇒
→
a
×
→
b
−
→
a
×
→
c
=
0
⇒
→
a
×
→
b
+
→
c
×
→
a
=
0
⇒
→
a
×
(
→
b
+
→
c
)
=
0
⇒
→
a
=
0
⇒
→
b
+
→
c
=
0
∴
→
b
=
−
→
c
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0
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×
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a
×
→
c
,
→
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Q.
If
→
a
,
→
b
,
→
c
are three vectors such that
→
a
+
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+
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