If four forces act at a point .O. as shown in the figure and if O is in equalibrium then the value of .theta. & .P. are

If four forces act at a point .O. as shown in the figure and if O is i

1.	If four forces act at a point .O. as shown in the figure and if O is in equalibrium then the value of .theta. & .P. are
Answer» `15^(0), 10sqrt(2)N` `45^(0), 10 N` `75^(0), 10sqrt(2)N` `90^(0), 20 N` ANSWER :D