If U(n) = sin n theta*sec^(n)theta, V(n)...

If `U_(n) = sin n thetasec^(n)theta, V_(n) = cosnthetasec^(n)theta `for n= 0,1,2,… then `V_(n) -V_(n-1)+U_(n-1)tantheta` =

A

0

B

1

C

`sintheta`

D

`costheta`

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The correct Answer is:

A

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