Trig equations

Pyth equation 1 with sin

Sin² x+Cos² =1

Pyth equation #2

1+tan²=sec²

Pyth equation #3

1+cot²x=csc

Sum/diff #1

Sin(A+B)=SinACosB+CosASinB

Sum/diff equation #2

Cos(A+B)=CosACosB-SinASinB

Double angle #1

Sin(2x)=2sinxcosx

Double angle #2

Cos(2x)=cos²x-sin²x

(tanx)(secx)

Sinx/1-sin²x

Sin(2x)=1-2sin²(x)

Double angle alt

Cos(2x)=cos²x-1

Double angle alt 2