- #1

- 18

- 0

does anyone knows the standard answer for

integral of cos(2deta)cos(ndeta) from 0 to 180 degress?

for instance for integral of sin(ndeta)sin(deta) 0 to 180 degress, when n=1, it is 90 degress and when n not equals 1, it is 0...

thanks

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- Thread starter stan
- Start date

- #1

- 18

- 0

does anyone knows the standard answer for

integral of cos(2deta)cos(ndeta) from 0 to 180 degress?

for instance for integral of sin(ndeta)sin(deta) 0 to 180 degress, when n=1, it is 90 degress and when n not equals 1, it is 0...

thanks

- #2

- 19

- 0

Have you tried using integration by parts?

- #3

Hurkyl

Staff Emeritus

Science Advisor

Gold Member

- 14,950

- 19

You might want to review your trig identities... there's one that makes this kind of integral really easy.

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