Hi I Hope you are having a good day.

We all Know the trig function of f(x) = a cos + q

So I tried to make a the subject of the formular but my formular does not provide the correct answer Here’s my failed attempt

f(x) = a cos + q

y = a cos + q

a/y= a/a cos + q

a/y= 1/cos + q

a= y/cos + q

I was hoping someone could show me what I am doing wrong and provide with the correct formular.

Thanks. Any Help and Solutions will be greatly appreciated