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3 sin 2x .tan 2x —cos 2x + for [3) / 13/Q81 [1] [5] / 11 / Q6. i) Show that cosž.a 1 —2 sin2 x + sin 4 x ii) Hence or otherwise , solve the equation 8 sin x + cos x — 2 cos x for 00 'X' 360 Q7. i) Express the equation sin 2 x + 3 cos 2 x = 3 ( sin 2x — cos 2 x) in the form tan 2 x = k , where k is a constant. 90 ................
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