Cheatography
https://cheatography.com
Double Angle Identities
sin(2a)=2sin(a)cos(a)
cos(2a)=cos2(a)-sin2(a)
cos(2a)=2cos2(a)-1
cos(2a)=1-sin2(a)
tan(2a)=2tan(a)/1-tan2(a) |
Angle Sum/Difference Identities
sin(A-B)=sin Acos B- cos Asin B
cos(A-B)= cos A cos B+sin A sin B
tan(A-B)= tan A - tan B/ 1+tan A tan B
sin(A+B)=sin Acos B+ cos Asin B
cos(A+B)= cos A cos B-sin A sin B
tan(A+B)= tan A + tan B/ 1-tan A tan B |
|
|
Reciprocal Identities and Cotangent/Tangent
cscx= 1/sinx
secx=1/cosx
cotx=1/tanx
tanx=sinx/cosx
cotx=cosx/sinx |
Pythagorean Idenitities
cos2x+sin2x=1
1+tan2x=sec2x
1+cot2x=csc2x |
Common Functions
f(x)=mx+b is a line moving up
f(x)= x2 is a parabola
f(x)= x3 is a half parabola with a reflection under the x axis
f(x)= sqrtx is a half sideways parabola on the positive side of the first quadrant |
|
|
Half Angle Identities
sinA/2= +- sqrt 1-cosA/2
cos A/2= +- sqrt 1+cos A/2
tan A/2= +- sqrt 1-cos A/1+cos A |
|
Created By
Metadata
Comments
How did you insert a picture?!?!?! Please help. I may not ever even see the response, but i will check for future references. I f i respond late my apologies in advance.
How did you insert a picture?!?!?! Please help. I may not ever even see the response, but i will check for future references. I f i respond late my apologies in advance.
Add a Comment