Trigonometric Identities and Equations

Find all values for $x\,$ in the interval $\leq x < 360^\circ$ , for which

2\cos^2 x - 3\sin^2 x = 14\cos x

Give your answers to one decimal place.

[8]

Find all values for $x\,$ in the interval $\leq x < 360^\circ$ , for which

2\cos^2 x - 3\sin^2 x = 14\cos x

Give your answers to one decimal place.

[8]

Trigonometric Identities and Equations Questions