math 10 – week 17

This week we did a lot of flashbacks on trig, linear relations and algebra.  We also did a bit more practice on arithmetic sequences.  My favorite part of the week was the trig flashbacks.  We reviewed soh cah toa.  We were given a triangle with 2 side lengths and had to calculate the other.  I had to remember how to find H, A, and O,  if i knew this i could use soh cah toa.  For example finding Sin i could have a triangle and be given H 20cm, and a refrence angle of 75degrees.  I can find x by calculating sin75=x/20 followed by 20(sin75)=x which equals to 19.3cm=x

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