PLEASE HELP WILL REWARD BRAINLIEST!!
A uniform, rectangular shop sign, ABCD, of weight 60 N with AB = 80 cm and AD = 120 cm is usually suspended from points A and B. One day the support at B fails so the shopkeeper keeps the sign vertical with a light, inextensible string attached horizontally to C

Find the magnitude of the tension, T, in the string.
[2 marks]

Defining i as the unit vector in the direction AB, and j as the unit vector in the direction DA, find,
in terms of i and j, the force acting on the support at A
[2 marks]

Find the magnitude of the force acting on the support at A and the direction this force makes with
the positive i direction.
[3 marks]