Derive this identity from the sum and difference formulas for cosine:
sinasinb=1/2[cos(a-b)co...
Mathematics, 06.03.2020 19:11 nickmoose04
Derive this identity from the sum and difference formulas for cosine:
sinasinb=1/2[cos(a-b)cos(a+b)]
Start with the right-hand side since it is more complex.
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