prove that two vectors are perpendicular if mod of a vector+b vector2 = mod of a vector 2 +mod of b vector 2
Answers
Answered by
2
Answer:
Yes they are perpendicular
Step-by-step explanation:
a
+
b
).(
a
+
b
)=∣
a
∣
2
⇒∣
a
∣
2
+∣
b
∣
2
+2
a
.
b
=∣
a
∣
2
⇒∣
b
∣
2
+2
a
.
b
=0
⇒(2
a
+
b
).
b
=0
Hence, 2
a
+
b
is perpendicular to
b
.
Similar questions