高一数学函数倍角公式是什么呢？小编这里带大家了解一下。

01、sin(A B)=sinAcosB cosAsinB

sin(A-B)=sinAcosB-cosAsinB?

cos(A B)=cosAcosB-sinAsinB

cos(A-B)=cosAcosB sinAsinB

tan(A B)=(tanA tanB)/(1-tanAtanB)

tan(A-B)=(tanA-tanB)/(1 tanAtanB)

cot(A B)=(cotAcotB-1)/(cotB cotA)?

cot(A-B)=(cotAcotB 1)/(cotB-cotA)

02、双曲函数 sinh(a)=(e^a-e^(-a))/2 cosh(a)=(e^a e^(-a))/2 tgh(a)=sinh(a)/cosh(a)

03、和差化积

sin(a) sin(b)=2sin[(a b)/2]cos[(a-b)/2]

sin(a)-sin(b)=2cos[(a b)/2]sin[(a-b)/2]

cos(a) cos(b)=2cos[(a b)/2]cos[(a-b)/2]

cos(a)-cos(b)=-2sin[(a b)/2]sin[(a-b)/2]

tanA tanB=sin(A B)/cosAcosB

04、积化和差公式 sin(a)sin(b)=-1/2*[cos(a b)-cos(a-b)] cos(a)cos(b)=1/2*[cos(a b) cos(a-b)] sin(a)cos(b)=1/2*[sin(a b) sin(a-b)]