Trig Proof (1 Viewer)

[Average Boreduser]

Bruh these trig qns man...
I keep gettng cos(2x)/sinxcosx for some reason

 

[cossine]

Bruh these trig qns man...
I keep gettng cos(2x)/sinxcosx for some reason

You have not shown working out

 

[Average Boreduser]

one sec

 

[Average Boreduser]

 

[5uckerberg]

View attachment 37294

Great stuff you are nearly there, using the fact that what should give us? Work this out then someone will give you the next clue.

 

[Average Boreduser]

1/2sin(2x)?

 

[5uckerberg]

1/2sin(2x)?

Nicely done or specifically now what is and what is ?
Noting this is just

 

[yanujw]

1/2sin(2x)?

Correct. Put that in the denominator of the fraction and you can get the RHS result required.

 

[Average Boreduser]

1/1/2=2, cos2x/sin2x=cot2x

 

[Average Boreduser]

OHHHH HOW DID I MISS THAT LOL

 

[Average Boreduser]

Thanks guys, I really appreciate it

 

[elliott07]

Just curious are you doing year 11 Math advanced or 12?