Question

Помогите решить, пожалуйста.

Answer 1

на фото...................................................

Answer 2

$frac{ frac{2Cos alpha }{Cos alpha }- frac{8Sin alpha }{Cos alpha }+ frac{10}{Cos alpha } }{ frac{4Sin alpha }{Cos alpha }- frac{Cos alpha }{Cos alpha } + frac{5}{Cos alpha } }= frac{2-8tg alpha + frac{10}{Cos alpha } }{4tg alpha -1+ frac{5}{Cos alpha } } = frac{2-8*0,25+ frac{10}{Cos alpha } }{4*0,25-1+ frac{5}{Cos alpha } } = frac{2-2+ frac{10}{Cos alpha } }{1-1+ frac{5}{Cos alpha } } =$$frac{10Cos alpha }{5Cos alpha }=2$