Question

Find the value of :

`sin  (19pi^"c")/3`

Answer 1

We know that sine function is periodic with period 2π.

∴ `sin  (19pi^"c")/3 = sin(6pi + pi/3)`

=  `sin(3 xx 2pi + pi/3)`

= `sin pi/3`

= `sqrt(3)/2`.