nnnnnhamilton4468 nnnnnhamilton4468

24-04-2024
Mathematics

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Using a double-angle or half-angle formula to simplify the given expressions.
(a) If cos²(33 deg )-sin²(33 deg )=cos(A deg ), then A= degrees.
(b) If cos²(4x)-sin²(4x)=cos(B), then B=

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