Unit 3 Test - All-in-One High School

formula translates to cos2 2x = 2 (cos4x 4-1). Now we can write sin4 x in terms of the first power of cosine as follows. —cos2x) = a (1 —2cos2x+cos22r) = a (1 2cos2x+5(cos4x+ l)) — cos2x + —cos4x+ — — — cos4x— —cos2r+ 20. Answers: (a) First, we use both of our new formulas, then simplify: ................
................

In order to avoid copyright disputes, this page is only a partial summary.