Question

How do you evaluate `sin((23pi)/6)`?

Answer 1

`sin ((23pi)/6) = -1/2`

Explanation:

`sin ((23pi)/6)`

`= sin (690) = sin (2*360 - 30)= sin (-30) = - sin30`

`sin 30 = 1/2`

`=>sin 690 = -1/2`