Question

A boy is pulling a load of 150N with a string inclined at an angle of 30 degrees to the horizontal. If the tension in the string is 150 N, the force tending to lift the load off the ground is: (sin 30 degrees = 1 ➗ 2, cos 30 degrees =√3 ➗ 2 and tan 30 degrees =1 ➗ √3)
oobleck
most people just type fractions like 1/2 or 1/√3
150 sin30° = 75N upward