R-formula and Trigonometry

Lisää tämän kaltaisia

Cell nucleus

luonut Felipe Miranda

Gum And Stabilizers

luonut nurul husna bt che saad

exponential and logarithmic functions

luonut Maryam Alameri

Triangles and Quadrilaterals

luonut keshav sahni

R-formula and Trigonometry

Further trigo identities

factor formulae

Eg. sinP+sinQ=2sin1/2(P+Q)cos1/2(P-Q)

R-formulae

eg. Acosx+Bsinx=Rcos(x-alpha) R= ((squareroot)A^2+b^2) tan(alpha)=B/A

double angle formulae

eg. sin2A=2sinAcosA cos2A=cos^2A-sin^2A tan2A=2tanA/1-tan^2A

addition formulae

eg. sin(A+B)=sinAcosB+cosAsinB

Simple trigo identies&eqns

proving identies

To prove a identity, we usually start with the side that is more complex looking and simplify the other side

basic identies

eg. sin^2x+cos^2x=1 secx=1/cosx cosecx=1/sinx cotx=1/tanx

Trigonometry functions

graphs of Sine, Cosine & Tangent functions

basic trigo eqns

general angels

complementary angles

special angles