law of sines
20/sin40=8/sinA
solve for angle A, then, you know angle B because the sume of the angles is 180
20/sin40=b/SinB
The resultant of vectors A and B has a magnitude of 20 units.A has a magnitude of 8 units, and the angle between A and B is 40o. Calculate the magnitude of B
1 answer
1 answer