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i've posted this before, but i thought id start a new thread. before i go on ill let u guys know that this is not in my text, this is something my teacher wanted to throw in because he wants us to know it. I've been trying and trying and i just can't figure out wat to do.
4)given the following vectors in polar form: A = 10, 30 degress, B = 20, 225 degrees, C = 25, 340 degrees, D = 15, 110 degrees, simplify the following:
A - 4C + D
so i think wat I am supposed to do is convert the vectors to rectangular form, so here's wat i got:
all aproximations
A = [5, 8.7]
C = [23.5, -8.6]
D = [-5.1, 14.1]
so basically the only thing i thought of doing was this:
[5, 8.7] + 4[23.5, -8.6] - [-5.1, 14.1]
[5, 8.7] + [94, -34.4] - [-5.1, 14.1]
[5 + 94 + 5.1, 8.7 - 34.4 - 14.1]
[104.1, - 39.8]
i've never felt more wrong, n plus i still don't know wat to do with the angles, i wish i knew how do this but my teacher never did one with us so we are all on our own, in need of help, thanks...
4)given the following vectors in polar form: A = 10, 30 degress, B = 20, 225 degrees, C = 25, 340 degrees, D = 15, 110 degrees, simplify the following:
A - 4C + D
so i think wat I am supposed to do is convert the vectors to rectangular form, so here's wat i got:
all aproximations
A = [5, 8.7]
C = [23.5, -8.6]
D = [-5.1, 14.1]
so basically the only thing i thought of doing was this:
[5, 8.7] + 4[23.5, -8.6] - [-5.1, 14.1]
[5, 8.7] + [94, -34.4] - [-5.1, 14.1]
[5 + 94 + 5.1, 8.7 - 34.4 - 14.1]
[104.1, - 39.8]
i've never felt more wrong, n plus i still don't know wat to do with the angles, i wish i knew how do this but my teacher never did one with us so we are all on our own, in need of help, thanks...