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Chapter 11
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Equation of a line in 3D
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Quiz
Class XII
Quick check : Equation of a line
6 questions
Question 1 of 6
Score:
0
/ 0
Vector form of a line through
a
⃗
\vec a
a
with direction
d
⃗
\vec d
d
A
r
⃗
=
a
⃗
+
d
⃗
\vec r = \vec a + \vec d
r
=
a
+
d
B
r
⃗
=
a
⃗
+
t
d
⃗
\vec r = \vec a + t\vec d
r
=
a
+
t
d
C
r
⃗
⋅
d
⃗
=
0
\vec r \cdot \vec d = 0
r
⋅
d
=
0
D
r
⃗
=
t
d
⃗
\vec r = t\vec d
r
=
t
d
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