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avatar+1124 

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:

 

\({sin(180-x)-2Cos(90-x).Cosx} \over{2Cos^2(360+x)-Cos(-x)}\)

 

I said:

 

\(={{Sinx-2Sinx.Cosx} \over {2Cos^2x-Cosx}}\)

 

\(= {{Sinx(1-2Cosx)} \over {Cosx(2Cosx-1)}}\)

 

At this point I'm not even sure if I'm still okay here....please help..thank you all kindly..

 Nov 18, 2023
 #1
avatar+397 
+1

Correct up to there, just two more steps.

 Nov 18, 2023
 #2
avatar+1124 
0

oh my...thanks...will try further..

juriemagic  Nov 18, 2023

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