Mathematics & Statistic Tutor Perth - SPSS Help   

Step One

Changing the equation may involve one of these situations:

Situation One
If you have just one Trigonometric Function and a number

Put the numbers on one side of the equals sign and leave the Trig Function on the other 

Situation Two
If you have more than one Trigonometric Function and  numbers
 
Move all to one side of the equals sign with zero on the other side and then use any type of factorising you can. The aim is to have one side where everything is multiplied to give the answer of zero so one of the items, brackets or letters  must equal zero and then proceed as Situation One.