sin(45度+30度)怎么算

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sin(45度+30度)怎么算sin(45度+30度)怎么算sin(45度+30度)怎么算依照:sin(x+y)=sin(x)cos(y)+sin(y)cos(x)sin(45°+30°)=sin45

sin(45度+30度)怎么算
sin(45度+30度)怎么算

sin(45度+30度)怎么算
依照:sin(x+y)=sin(x)cos(y)+sin(y)cos(x)
sin(45°+30°)= sin45°cos30°+ sin30°cos45°
=(√2/2)*(√3/2) + 1/2 * (√2/2)
=(√6+√2)/4

sin(45°+30°)= sin45°cos30°+ sin30°cos45°
=(√2/2)*(√3/2) + 1/2 * (√2/2)
=(√6+√2)/4