Ответ:
Объяснение:
Формула: sinx+siny=2sin((x+y)/2)cos((x-y)/2)
0,5=sinπ/6
1=2sinπ/6
1+2sina=2sinπ/6+2sina=2(sinπ/6+sina)=2·2sin((π/6+a)/2)cos((π/6-a)/2)=
=4sin(π/12+a/2)cos(π/12-a/2)
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Verified answer
Ответ:
Объяснение:
Формула: sinx+siny=2sin((x+y)/2)cos((x-y)/2)
0,5=sinπ/6
1=2sinπ/6
1+2sina=2sinπ/6+2sina=2(sinπ/6+sina)=2·2sin((π/6+a)/2)cos((π/6-a)/2)=
=4sin(π/12+a/2)cos(π/12-a/2)