Asked by Robyn

For the following vector addition diagrams, use Pythagorean Theorem to determine the magnitude of the resultant. Use SOH CAH TOA to determine the direction. Use the tail end relative to due east.
^
I 4 m
I
------>I
3 m
I've got the Pythagoren Theorem and the angle measure down. I just don't understand the addition and tail end relative to east thing.
Answered by Robyn
the 4m line should intersect with the arrow on the right of the 3m line.
Answered by bobpursley
Nope. head to tail is the rule. Move the 3m arrow up to start at the head(top) of the 4m arrow. Then the resultant is from the origin to the head of the 3m arrow.

3m
----->o
^
|
|4m The resulant goes from x to o
|
|
x
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