TRIG FORMULAE Flashcards
1
Q
Addition Formula SIN (A + B)
A
SIN (A + B) = SIN(A)COS(B) + COS(A)SIN(B)
2
Q
Addition Formula SIN (A - B)
A
SIN (A - B) = SIN(A)COS(B) - COS(A)SIN(B)
3
Q
Addition Formula COS (A + B)
A
COS (A + B) = COS(A)COS(B) - SIN(A)SIN(B)
4
Q
Addition Formula COS (A - B)
A
COS (A - B) = COS(A)COS(B) + SIN(A)SIN(B)
5
Q
Addition Formula TAN (A + B)
A
( TAN(A) + TAN(B) ) / ( 1 - TAN(A) TAN(B) )
6
Q
Addition Formula TAN (A - B)
A
TAN (A - B) = ( TAN(A) - TAN(B) ) / ( 1 + TAN(A) TAN(B) )
7
Q
SIN (2A) =
A
2sinAcosA
8
Q
COS (2A) = [COS AND SIN]
A
Cos²A - Sin²A
9
Q
COS (2A) = [COS]
A
2Cos²A - 1
10
Q
COS (2A) = [SIN]
A
1 - 2Sin²A
11
Q
TAN (2A) =
A
2TanA / 1 - Tan²A
