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For 0ltphilepi//2, if : x=underset(n=0...

For `0ltphilepi//2`, if :
`x=underset(n=0)overset(oo)sumcos^(2n)phi,y=underset(n=0)overset(oo)sumsin^(2n)phi`,
`z=underset(n=0)overset(oo)sumcos^(2n)sin^(2n)phi`, then :

A

`xyz=xz+y`

B

`xyz=xy+z`

C

`xyz=x+yz`

D

`xyz=yz+x`

Text Solution

Verified by Experts

The correct Answer is:
B
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