Trig. Past Papers Unit 2 Outcome 3 - PRESTWICK ACADEMY

Higher Mathematics PSfrag replacements O x y [SQA] 7. (a) Show that 2cos2x cos2 x = 1 3sin2 x . 2(b) Hence solve the equation 2cos2x cos2 x = 2sin x in the interval0 x < 360. 4 PSfrag replacements O x y [SQA] 8. Solve the equation sin2x +sin x = 0, 0 x < 360. 5 PSfrag replacements O x y [SQA] 9. Find, correct to one decimal place, the value of x between 180 and 270 which satises the equation ... ................
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