Question

to unload hollow blocks from the cargo truck a wooden plank whose end rests against the truck's platform 1.5 meters above the ground is used. if it is inclined 37%49 with the ground, how long is the wooden plank?

Answer 1

If you mean 37°49', then clearly

sin 37°49' = 1.5/x

now just solve for x, the length of the plank. Oh, and review your basic trig functions.