Question

Помогите срочно

1)sin35°×cos60°+cos35°×sin60°

2)sin150°×cos80°-cos150°×sin80°

Answer 1

1) sin35° * cos60° + cos35° * sin60° =  sin(35° + 60°) = sin95°

2) sin150° * cos80° - cos150° * sin80° =  sin(150° - 80°) = sin70°