For two vectors A and B. A+B =A-B, if and only if??​

if and only if is a zero vector.

Explanation:

An equation is true if and only if adding the same value to both sides of the equation (the value needs to be compatible) gives an equation that is also true.

Start with the .

This equation is true if and only if ( is added to both sides of the original equation.)

Vector addition and subtraction are associative. Therefore, if and only if , which is equivalent to .

if and only if (is added to both sides of this equation,) which is equivalent to .

if and only , which is equivalent to . That is: is the zero vector.

In other words:

.

Hence, if and only if is the zero vector.

a) are muscles that have bands.

happy to

pls mark as brainliest

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west