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Mathematics 8 Online
OpenStudy (darkbluechocobo):

Help with application of vectors

OpenStudy (darkbluechocobo):

Find the magnitude of the resultant force of two forces with magnitudes of 55 pounds and 85 pounds at angles of 65° and 125°, respectively. Round answers to the nearest hundredth of a pound or degree.

OpenStudy (darkbluechocobo):

I got <23.24,49.84> <-48.75,69.62> i got for the magnitude 122.15

OpenStudy (isaiah.feynman):

Can we see what you did?

OpenStudy (darkbluechocobo):

Alright

OpenStudy (darkbluechocobo):

x1, and y1 = 55cos65 and 55sin65 x2 and y2 = 85cos125 and 85sin125

OpenStudy (darkbluechocobo):

and then to find magnitude did

OpenStudy (darkbluechocobo):

sqrt((−25.51)^2 + (119.46)^2)

OpenStudy (isaiah.feynman):

You added by components right?

OpenStudy (darkbluechocobo):

I believe so

OpenStudy (darkbluechocobo):

combined got <-25.51,119.46> bfore the magnitude

OpenStudy (isaiah.feynman):

Then you are on the right track.

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