カテゴリー 全て - trigonometry - formulas

によって val Ortega 9年前.

303

Trig Formulas

The given text provides a collection of essential trigonometric formulas, covering various key aspects such as sum, half-angle, double-angle, and difference identities. The sum identities include expressions for sine, cosine, and tangent of the sum of two angles.

Trig Formulas

Trig Formulas

Sum

tan(A+B) =(sinAcosB+sinBcosA)/(cosAcosB+/sinAsinB)
sin(A+B)=sinAcosB+cosAsinB
cos(A+B)=cosAcosB-sinAsinB

difference

sin(A+B)=sinAcosB-cosBsinA
cos(A-B)=cosAcosB+sinAsinB
tan(A-B)=(sinAcosB-sinBcosA)/(cosAcosB+sinAsinB)

Double Angle

tan(2x)=(2tanx)/(1-tan^2x)
cos(2x)
1-2sin^2x
2cos^2x-1
cos^2x-sin^2x
sin(2x)=2sinxcosx

Half Angle

tan(x/2)=+-sqrt(1-cosx)/1+cosx)
cos^2x=(1+cos2x)/(2)
sin^2x=(1-cos2x)/(2)