Trig Identities (ALL)

tan 0

tan(x)=0

tan pi/4

tan(x)=1

tan pi/6

tan(x)=1/sqrt(3)

tan pi/2

tan(x)=DNE

tan pi/3

tan(x)=sqrt(3)

cos^2(x)

(1+cos(2x))/2

tan^2(x)

(1-cos(2x))/(1+cos(2x))

sin^2(x)

(1-cos(2x))/2

tan(2x)

2tan(x)/(1-tan^2(x))

30,45,60,90,120,135,150,180,210,225,240,270,300,315,330,360

Degrees of Unit Circle (comma between each one) till 360

1+cot^2(x)=csc^2(x)

Pathagorean Identity of cot and csc

sin^2(x)+cos^2(x)=1

Pathagorean Identity of sin and cos

tan^2(x)+1=sec^2(x)

Pathagorean Identity of tan and sec

pi/6,pi/4,pi/3,pi/2,2pi/3,3pi/4,5pi/6,pi,7pi/6,5pi/4,4pi/3,3pi/2,5pi/3,7pi/4,11pi/6,2pi

Radians of Unit Circle (comma between each one) till 2pi

cos^2(x)-sin^2(x)

cos(2x) 1st Identity

2cos^2(x)-1

cos(2x) 2nd Identity

1-2sin^2(x)

cos(2x) 3rd Identity

cos pi/2

cos(x)=0

cos 0

cos(x)=1

cos pi/3

cos(x)=1/2

cos pi/4

cos(x)=sqrt(2)/2

cos pi/6

cos(x)=sqrt(2)/2

2sin(x)cos(x)

sin(2x)

sin 0

sin(x)=0

sin pi/2

sin(x)=1

sin pi/6

sin(x)=1/2

sin pi/4

sin(x)=sqrt(2)/2

sin pi/3

sin(x)=sqrt(3)/2