Solution of task 1.1.12 from the collection of Kepe OE

Solution of task 1.1.12 from the collection of Kepe OE

1.1.12
The resultant of convergent forces F1 and F2 is equal modulo R = 8H and forms c
The horizontal axis Ox is the angle? = 30 °. The force vector F1 is directed along the Ox axis, and the force vector F2
Forms an angle? = 60 ° with this axis. Determine the modulus of force F1. (Otvet 4.62)