Pre Calculus - Trig Identities

sin(x)

1/csc(x)

cos(x)

1/sec(x)

tan(x)

1/cot(x)

csc(x)

1/sin(x)

sec(x)

1/cos(x)

cot(x)

1/tan(x)

tan(x)

sin(x)/cos(x)

cot(x)

cos(x)/sin(x)

cos(x)²+sin(x)²

1

1+cot(x)²

csc(x)²

sec(x)²-tan(x)²

1

tan(-x)

-tan(x)

cot(-x)

-cot(x)

sin(-x)

-sin(x)

csc(-x)

-csc(x)

cos(-x)

cos(x)

sec(-x)

sec(x)

sin(x)

cos(pi/2-x)

cos(x)

sin(pi/2-x)

tan(x)

cot(pi/2-x)

cot(x)

tan(pi/2-x)

sec(x)

csc(pi/2-0)

csc(x)

sec(pi/2-x)

cos(A+B)

cosAcosB-sinAsinB

cos(A-B)

cosAcosB+sinAsinB

sin(A+B)

sinAcosB+cosAsinB

sin(A-B)

sinAcosB-cosAsinB

tan(A+B)

tanA+tanB/1-tanAtanB

tan(A-B)

tanA-tanB/1+tanAtanB

sin(2x)

2sin(x)cos(x)

cos(2x)

cos(x)²-sin(x)²

cos(2x)

1-2sin(x)²

cos(2x)

2cos(x)²-1

tan(2x)

2tan(x)/1-tan(x)²