职高数学三角函数

1)2tan()2cos()2sin()(2kkkzkk)tan()cos()sin()tan()cos()sin()tan()cos()sin(y=sinxy=cosxx=,y=x=,y=x=,y=x=,y=xsinxcos,];,(kZ)(kZ)21-1y=sinx-32-52-727252322-2-4-3-2432-oyx1-1y=cosx-32-52-727252322-2-4-3-2432-oyx1.300oA.43B.53C.76D.742.ABCD3.xA.0360()kkZB.001800C.00360180()kkZD.0180()kkZ4.sin=131202cos()=1312.A135.B1312.C135.D5.AsinA=22AA.450B.1350C.3600k+450D4501356.ABC54cosAAsin7.|sin|=sin.8.2sinx+a=3,a9.sin=35()cos=tan=10.sin(-314)=;cos665=