5.3 More Practice Solving Trig Equations Decide if each x ...

11. 2cos2x— cosx — 12. sin- = — 13. 4 tan(3x) — ) 1=0 30 130 Use your calculator to approximate the solutions (to two decimal places) of the equation in the interval 10, 27t). 14. 3 tan2 x — 15. 3cos2x— —b+ b2—4aC tan x —2 = 0 2a 0 ................
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