review identitites.notebook
April 12, 2017
How long is the 3rd hose
Apr 11­2:04 PM
Apr 11­2:05 PM
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review identitites.notebook
April 12, 2017
Reciprocal Identities csc = 1
sin sin tan = cos 1
sec = cos cos
cot = sin cot = 1
tan Pythagorean Identities
cos2 +sin 2 =1
1+tan2 =sec 2 cot2 +1=csc 2 Negative Angle
sin(­ )=­sin cos(­ )=cos tan(­ )=­tan Mar 20­10:31 AM
Sum identities
sin(A+B)=sinAcosB+cosAsinB
cos(A+B)=cosAcosB­sinAsinB
tan(A+B)=
tanA+tanB
1­tanAtanB
Difference Identities
sin(A­B)=sinAcosB­cosAsinB
cos(A­B)=cosAcosB+sinAsinB
tanA­tanB
tan(A­B)=
1+tanAtanB
Mar 20­10:56 AM
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review identitites.notebook
April 12, 2017
Double Angle Identities
sin2 =2sin cos cos2 =cos2 ­sin2 cos2 =2cos2 ­1
cos2 =1­2sin2 tan2 =
2tan 1­tan2 Mar 20­2:25 PM
Verify
1
cosθcotθ= sinθ ­sinθ
sin2θtan2θ=tan2θ­sin2θ
cscθ
sinθ+cosθcotθ
Apr 11­1:51 PM
3
review identitites.notebook
April 12, 2017
cos75
Apr 11­2:00 PM
Homework Pg 799 1­20 all
Apr 11­2:02 PM
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review identitites.notebook
April 12, 2017
Apr 12­11:50 AM
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