Math Pro
about
qns
questions
progress
Question 1203c
Vectors I: Basics, Dot and Cross Products
Algebra III
Question
Generate new
Given that
∣
a
∣
=
3
,
{|\mathbf{a}|=3,}
∣
a
∣
=
3
,
b
{\mathbf{b}}
b
is a unit vector, and the angle between the the vectors is
6
0
∘
,
{60^\circ,}
6
0
∘
,
what is the value of
(
2
a
+
5
b
)
⋅
(
4
a
+
2
b
)
?
(2 \mathbf{a} + 5 \mathbf{b})\cdot(4 \mathbf{a} + 2 \mathbf{b})?
(
2
a
+
5
b
)
⋅
(
4
a
+
2
b
)?
Attempt
Your answer:
Answer
Back to top ▲
Question Progress
Start
Mastery
about
questions
progress