Question

2cos2n@+1/2cos@+1=(2cos@-1)(2cos@-1)(2cos2square@-1)..
(2cos2n-1@-1).prove it..

Answer 1

having a hard time understanding, is this the question:
\[\frac{2\cos(2n\theta+1)}{2\cos(\theta)} = \cdots\]
im not even sure what the right hand side is....

Answer 2

oh oh, maybe:
\[2\cos^{2n}(\theta+1) \]
instead?

Answer 3

hey shruti can you write this using the equation thingy below
if you want you can use frac{somethin}{something} to enter in fractions

Answer 4

or maybe scan or take a picture and upload it.

Answer 5

that might be easier

Answer 6

dont know what it is exactly , but pretty good chance it involves complex numbers and sum of a gp