(i)[3]
Show that the equation $2\cos x = 3\tan x$ can be rearranged into a quadratic equation in $\sin x$.
(ii)[4]
Solve the equation $2\cos 2y = 3\tan 2y$, over $0^\circ \leq y \leq 180^\circ$.
Mathematics 9709 · AS & A Level · Trigonometry
Mathematics 9709 · AS & A Level · Trigonometry
Show that the equation $2\cos x = 3\tan x$ can be rearranged into a quadratic equation in $\sin x$.
Solve the equation $2\cos 2y = 3\tan 2y$, over $0^\circ \leq y \leq 180^\circ$.