Good day friends,
I trust you are all doing well. It's been a long time since I asked for assistance here, I sincerely hope someone will help me please.
We have to write the following as a single Trigonometric expression:
sin(180−x)−2Cos(90−x).Cosx2Cos2(360+x)−Cos(−x)
I said:
=Sinx−2Sinx.Cosx2Cos2x−Cosx
=Sinx(1−2Cosx)Cosx(2Cosx−1)
At this point I'm not even sure if I'm still okay here....please help..thank you all kindly..