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Posted by **Clarissa** on Sunday, December 11, 2011 at 7:09pm.

magnitude 10

angle of 45 degrees with positive x-axis

angle of 75 with positive y-axis

positive k component

- math / science -
**bobpursley**, Sunday, December 11, 2011 at 7:25pmr= 10cos45 i + 10 cos75 j + Z k

but you know you can find Z by this

10^2=10^2*cos^2 45 + 10^2 cos^2 75 + Z^2

or

Z= 10 sqrt (1-.5-.067)

Z= 6.58

check all that.

- math / science -
**Clarissa**, Sunday, December 11, 2011 at 7:39pmthank you so much

- math / science -
**Clarissa**, Sunday, December 11, 2011 at 8:10pmso then is the vector .5i + .067j + 6.58k??

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