Mathalcoholic
New member
- Joined
- Oct 18, 2020
- Messages
- 3
Hello,
I've come across an exercise that has caught my attention, however I haven't been able to answer it correctly yet. I'm currently studying trigonometry function and this exercise has arithmetic progression included in it.
Here's the exercise translated in english:
"Consider a sequence of numbers
a_n=sin(nxpi)/4, n=1,2,3,..., Prove without using any technical aids that
a_1=a_9=a_17."
Here's also a photo of the exercise:
I've come across an exercise that has caught my attention, however I haven't been able to answer it correctly yet. I'm currently studying trigonometry function and this exercise has arithmetic progression included in it.
Here's the exercise translated in english:
"Consider a sequence of numbers
a_n=sin(nxpi)/4, n=1,2,3,..., Prove without using any technical aids that
a_1=a_9=a_17."
Here's also a photo of the exercise: