Dave Korn wrote:
" Identities such as sin(x)^2 + cos(x)^2 === 1 are only valid when 0 <= x <= 2*PI"
It's been a while since I studied math, but isn't that particular identity is true for any x real or complex?
David Daney,
Dave Korn wrote:
" Identities such as sin(x)^2 + cos(x)^2 === 1 are only valid when 0 <= x <= 2*PI"
It's been a while since I studied math, but isn't that particular identity is true for any x real or complex?
David Daney,