Are the vectors A(3,4) and B(4,-5) perpendicular to each other?

0 ⤊

Are the vectors A(3,4) and B(4,-5) perpendicular to each other?

2007-02-22 13:31:49 · 3 answers · asked by juliandbn 1 in Science & Mathematics ➔ Physics

3 answers

no. if you drew a line through A it would have a slope of 4/3
if you drew a line through B it would have a slope of -5/4. in order for them to be perpendicular the lines would have to have slpes that were negative reciprocals of eachother.

2007-02-22 13:36:58 · answer #1 · answered by jason 2 · 0⤊ 0⤋

3*4 + 4* -5 = 12 + -20 = -8, which isn't zero, so the answer is "no".

2007-02-22 13:35:52 · answer #2 · answered by J Dunphy 3 · 0⤊ 0⤋

No for S1 * S2 does not equal (-1)

2007-02-22 13:35:51 · answer #3 · answered by a_ebnlhaitham 6 · 0⤊ 0⤋