Practice Questions (with Answers) - Math Plane

Cos2x 2Cos 2 x — 1 Cos2x — sin2x — 2sinxcosx 2cos2 x 2cosxsinx . 11. 1 + sec sin + tan cos sm cos esc cos + 1 cos s cos cos + 1 SOLUTIONS sint + cosx sim- + cosx sin 2x cos (cos2y — sin (cos2y cott cos2 x + cos smrcosx Trigonometry Identity Review Test sin4y — cos2y y + sin2 y) sin 2y) (1) — cos2y — cos2y ................
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