1.5.15 Trigonometric equations

i.

Solve, for $\pi$ , the equation

4x - 5)(4\sin^2 x - 3) = 0

giving your answers in terms of $π\pi$ where appropriate.

[3]

ii.

Solve, for $\theta < 360^\circ$ , the equation

11\cos \theta = 3\cos 2\theta + 8

giving your answers to one decimal place.

[5]

i.

Solve, for $\pi$ , the equation

4x - 5)(4\sin^2 x - 3) = 0

giving your answers in terms of $π\pi$ where appropriate.

[3]

ii.

Solve, for $\theta < 360^\circ$ , the equation

11\cos \theta = 3\cos 2\theta + 8

giving your answers to one decimal place.

[5]

1.5.15 Trigonometric equations Questions