## abdullah1995 one year ago A forece acts at the origin of a coordinate system in a direction defined by the angles theta(x) = 75, Theta(z) = 130. Knowing that the y component of the force is +300 lb, determine, (a) the angle Theta(y) (b) the other components and the magnitude of the force.

1. abdullah1995

@ganeshie8

2. IrishBoy123

you have $$\vec F = F_T<cos \theta_x,cos \theta_y,cos \theta_z>$$ and $$\vec F \bullet \vec F = F^2_T <cos \theta_x,cos \theta_y,cos \theta_z> \bullet <cos \theta_x,cos \theta_y,cos \theta_z> = F^2_T$$

3. ybarrap

You can get $$F_T$$ from the information in the diagram below |dw:1435927169291:dw| Then the other components can be calculated: $$F_x=F_T\cos 75\\ F_z=F_T\cos 130\\$$ Does this make sense?

4. ybarrap

|dw:1435927683124:dw|