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.