If sin x=-5/13, then determine sin(x/2). Should I use a compound angle formula for this?

Thanks!

If sin x=-5/13, then determine sin(x/2). Should I use a compound angle formula for this?

Thanks!

Thanks!

Seaweed09 wrote:If sin x=-5/13, then determine sin(x/2). Should I use a compound angle formula for this?

Thanks!

How about using the half-angle identity?