1.5.15 Trigonometric equations

Question 6

a.

Show that the equation $3sin⁡2xtan⁡2x=cos⁡2x+23\sin 2x \tan 2x = \cos 2x + 2$ can be written in the form $4\cos^2 2x + 2\cos 2x - 3 = 0$

[4]

b.

Find all the values of $x\,$ in the interval $\leqslant x < 180°\,$ for which $3sin⁡2xtan⁡2x=cos⁡2x+23\sin 2x \tan 2x = \cos 2x + 2$ Give your answers to 2 decimal places.

[6]

1.5.15 Trigonometric equations

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Question 6

a.

Show that the equation $3sin⁡2xtan⁡2x=cos⁡2x+23\sin 2x \tan 2x = \cos 2x + 2$ can be written in the form $4\cos^2 2x + 2\cos 2x - 3 = 0$

[4]

b.

Find all the values of $x\,$ in the interval $\leqslant x < 180°\,$ for which $3sin⁡2xtan⁡2x=cos⁡2x+23\sin 2x \tan 2x = \cos 2x + 2$ Give your answers to 2 decimal places.

[6]

1.5.15 Trigonometric equations

Question 6

Markscheme

1.5.15 Trigonometric equations

Question 6

Markscheme

1.5.15 Trigonometric equations

Question 6

1.5.15 Trigonometric equations Questions

1.5.15 Trigonometric equations

Question 6

1.5.15 Trigonometric equations Questions