The resultant of forces P, Q, R acting along the sides BC, CA, AB of triangle ABC passes through its circumcenter, then
1
P sin A + Q sin B + R sin C = 0
2
P cos A + Q cos B + R cos C = 0
3
P sec A + Q sec B + R sec C = 0
4
P tan A + Q tan B + R tan C = 0
5
Question Not Attempted