1.
=2×3×4=24.
ответ (20; 25)
2.
=(cos (30+5))/2(sin (60-5))=
(cos30cos5-sin30sin5)/2(sin60cos5-cos60sin5) =
( |/3/2cos5-1/2sin5)/
2(|/3/2cos5-1/2sin5) =1/2=0,5
1.
=2×3×4=24.
ответ (20; 25)
2.
=(cos (30+5))/2(sin (60-5))=
(cos30cos5-sin30sin5)/2(sin60cos5-cos60sin5) =
( |/3/2cos5-1/2sin5)/
2(|/3/2cos5-1/2sin5) =1/2=0,5