Question

(sin/π8) / (cos/π8)

Спасибо заранее!!!

Answer 1

sin(π/8)=√[(1-cosπ/4)/2]=√[(1-√2/2)/2]=√(2-√2)/2
cos(π/8)=√[(1+cosπ/4)/2]=√[(1+√2/2)/2]=√(2+√2)/2