Which one of the following number (s) is...

Which one of the following number (s) is/are rational? - 1) `sin 15^(@)` 2) `cos 15^(@)` 3) `sin 15^(@) cos 15^(@)` 4)`sin15^(@) cos 75^(@)`

A

`sin 15^(@)`

B

`cos 15^(@)`

C

`sin 15^(@) cos 15^(@)`

D

`sin15^(@) cos 75^(@)`

Verified by Experts

The correct Answer is:

C

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