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11 cards from this deck
Trig identities that transform products into sums/differences
Products of sine/cosine into sums or differences
12[sin(A+B)+sin(A−B)]\frac{1}{2}[\sin(A + B) + \sin(A - B)]21[sin(A+B)+sin(A−B)]
12[sin(A+B)−sin(A−B)]\frac{1}{2}[\sin(A + B) - \sin(A - B)]21[sin(A+B)−sin(A−B)]
12[cos(A+B)+cos(A−B)]\frac{1}{2}[\cos(A + B) + \cos(A - B)]21[cos(A+B)+cos(A−B)]
−12[cos(A+B)−cos(A−B)]-\frac{1}{2}[\cos(A + B) - \cos(A - B)]−21[cos(A+B)−cos(A−B)]
Addition and subtraction identities for sine and cosine
Simplify expressions, solve equations, evaluate integrals
12[sin5x+sinx]\frac{1}{2}[\sin 5x + \sin x]21[sin5x+sinx]
12[cos6x+cos2x]\frac{1}{2}[\cos 6x + \cos 2x]21[cos6x+cos2x]
Simplify complex expressions and make equations manageable
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