Question

if |A-B| = |A|-|B|, the angle between A and B is? explain plz​

Answer 1

Answer:

45

as Angle a is equal to 30

and other angle b is equal to 60

as trigonometry ration

for example

tana-b=root 3

tan a-b=1 upon root 3

so adding both the equation

2a-2b=90

a-b=45

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