Safari File Edit View History Bookmarks Window Help A docs.google.com Google Docs Untitled document. O Josh Nilson - Wo. O Schedule Appoint. (276) 2 Untitled document D O a Share File Edit View Insert Format Tools Add-ons Help Last edit was 55 minut. 100% - Normal text Arial 12 + ... 4. 8 19 10 11 12 13 1 14 17 18 Use the sum and difference formulas or a double angle formula to rewrite the expressions as sin, cos or tan (a) cos^2x - % (b) 6 sin x cos x

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