I have got a really hard question in one of my assignments, and i originally failed this question in september and i got it back to re-do and i still cant do it! If anyone can help me i would be really grateful.
The question goes as follows:
In the diagram below (Fig 1)AB is the inclined jib of a crane and is 10m long. AC is 4m long. Using the sine rule, calculate the inclination of the jib to the vertical and the length of tie CB. "
The picture is here: http://img36.imageshack.us/img36/916/mathsquestion.png