Answer with Step-by-step explanation:
We are given that
u+ v and u-v are orthogonal
We have to prove that u and v must have the same length.
When two vector a and b are orthogonal then

By using the property

We know that



Magnitude is always positive
When power of base on both sides are equal then base will be equal
Therefore,

Hence, the length of vectors u and v must have the same length.
Answer:
pervious prices is $4.8 per pound
Step-by-step explanation:
current price is $6 per pound
previous price is 20% less than current price
20% of 6
6 × 20 ÷ 100 = $1.2
$6 - $1.2 = $4.8
Answer:
can bcz triangle has 3 sides here 3 cm are there
Answer:

Step-by-step explanation:
hope this helps :)
Answer:
2.68
Step-by-step explanation:
In similar triangles, the corresponding sides are in same ratio
