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Maths Puzzle
Numerical Ability
I can't seem to make out how to do this problem. it is so confussing. the problem is:
-7.5xs-0.9=-5.7x+4.5
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book Other Question
How do you solve and graph this problem? y+1=2abs(x+1)-1
express each of the following in terms of a reference angle.
a)cos 236 degrees
b)sin 485 degrees
c)sin (-62 degrees)