Physics Question?

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F=(-3.9,1.8) where all components are in newtons. What angle (in degrees) does F make with the positive x-axis?

2006-09-11 07:33:16 · 3 answers · asked by Anonymous in Education & Reference ➔ Homework Help

3 answers

???????????????? look at your notes

2006-09-11 07:38:12 · answer #1 · answered by Roxy 3 · 0⤊ 0⤋

It's a second quadrant angle, making it obtuse. Use tangent = opposite leg/adjacent leg (y/x) and solve the equation

angle = tan^-1 (1.8/3.9) which gives the acute angle, then subtract this from 180 to get the obtuse angle.

2006-09-11 14:41:57 · answer #2 · answered by hayharbr 7 · 0⤊ 0⤋

tan =1.8/3.9

solve and then subtract from 180

=155.2

2006-09-11 14:38:16 · answer #3 · answered by odu83 7 · 0⤊ 0⤋