Question

if |A-B|=|A|-|B| the angle between A and B is​

Answer 1

Step-by-step explanation:

we know, |A - B| = √{|A|² + |B|² - 2|A||B|cos}

where is angel between A and B.

given, |A - B| = |A| - |B|

so, √{|A|² + |B|² - 2|A||B|cos} = |A| - |B|

squaring both sides,

|A|² + |B|² - 2|A||B|cos = |A|² + |B|² - 2|A||B|

or, -2|A||B|cos = -2|A||B|

or, cos = 1 = cos0°

hope its helpful for you.......

Answer 2

Answer:

here,angle between A and B is 0 degree

Step-by-step explanation: