Addition Formula sin(A+B)?
sinAcosB + cosAsinB
Addition Formula cos(A+B)?
cosAcosB - sinAsinB
Addition Formula tan(A+B)?
[ tanA + tanB ] // [ 1 - tanA*tanB ]
Subtraction Formula sin(A+B)?
sinAcosB - cosAsinB
Subtraction Formula cos(A-B)?
cosAcosB + sinAsinB
Subtraction Formula tan(A-B)?
[ tanA - tanB ] // [ 1 + tanA*tanB ]
Double angle formulae sin(2A)?
2sinAcosA
Double angle formulae cos(2A)? Version 1
cos^2 (A) - sin^2 (A)
Double angle formulae cos(2A)? Version 2
2*cos^2 (A) - 1
Double angle formulae cos(2A)? Version 3
1 - 2*sin^2 (A)
Double angle formulae tan(2A)?
2*tanA // 1-tan^2 (A)