Help with magnitude, components, vectors

[buoyant heath]

Can someone check the following:

I'm unsure between B and D

<@&962633355730513930>

<@&780044119199973376>

[frosty sedge]

ok so you did the math just fine

at this point, there's no math--just look at it visually

[buoyant heath]

Is this right tho? I'm unsure since I got similar question wrong

[frosty sedge]

if you're thinking D, you're right

[buoyant heath]

For this right?

[frosty sedge]

26.57 degrees would be this

[buoyant heath]

Ohhh so I add 180? What is the rule regarding adding 180?

I've looked at many videos about it; but they never once covered it

[buoyant heath]

Are these all correct by any chance?

[frosty sedge]

so generally, arctan can only tell you an angle between -90 degrees and 90 degrees

but sometimes you're working with an angle that isn't in that range

[buoyant heath]

How can you tell?

[frosty sedge]

I'd say very generally, you should add 180 degrees if the vector is pointing overall to the "left"

[buoyant heath]

Thanks that really helps tbh

[buoyant heath]

Are these correct also?

@frosty sedge