Hello, Tom G!
You're expected to know these two identities: .I've got to re-write
in the form . . . . This can't be right!
. . Do you mean: .
Then: .
. .
Hi, I've got to re-write 3sin x cos x + 4cos^2 x in the form a sin2x+b sin2x +c and I'm struggling. I've already asked my maths teacher for help and she told me how to do it but I can only remember half of the process and am now confused. Any help would be appreciated.
Hi, I've checked the wording of the answer and have copied it down exactly:
"Express 3sin x cos x + 4sin^2 x in the form a sin2x +b cos2x +c where a,b and c are constants to be found." - sorry i copied it down wrong.