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Direction of resultant

How do you find the direction of the resultant on a nat 5 level. I'm so confused. I can find the angle using tangent() but then I have no idea how to add or subtract it from the previously existing angle. Any resources where I can learn exactly this would help. Thanks
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Original post by randInt47
How do you find the direction of the resultant on a nat 5 level. I'm so confused. I can find the angle using tangent() but then I have no idea how to add or subtract it from the previously existing angle. Any resources where I can learn exactly this would help. Thanks

Can yu post an example?

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