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[SAT数学考试辅导] SAT数学必备三角函数公式总结
1)两角和公式sin(A+B)=sinAcosB+cosAsinB sin(A-B)=sinAcosB-sinBcosAcos(A+B)=cosAcosB-sinAsinB cos(A-B)=cosAcosB+sinAsinBtan(A+B)=(tanA+tanB)/(1-tanAtanB) tan(A-B)=(tanA-tanB)/(1+tanAtanB)cot(A+B)=(cotAcotB..2013-07-29 编辑：Sophie
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2013-07-29 编辑：Sophie
