Solution The angle between y-axis and 12N Vectors is ; Therefore
⟹ 360∘− 280∘=80∘Angle between vectors⟹θ=80+65=θ=145∘Then using a parallelogramAngle between vector ⟹ 180−θ⟹180−145⟹ 35∘ Now, find the Resultant R=(12)2+(40)2+2∗12∗40∗Cos(35∘)=2530.38596=50.30Direction(Use Sine)=Sin θSin(35∘)=40RSin θ=50.30∘40∗Sin(35∘)θ=27.14∘
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