Week 5 Blog post – Trig equations

This week we did a ton of solving trig equations, but now we’ve started to put them into words.

for example:

A mine shaft which slopes at an angle of 19 degrees to the horizontal is driven into a hillside for 400m. how much lower, to the nearest metre, is the end of the shaft than the beginning.

  

the shaft is 130m lower than the beginning.