Solve the following trigonometric question: cos x=3 cos x-2

Mathematics

1 answer:

bija089 [108]4 years ago

3 0

Answer:

x = 0°

Step-by-step explanation:

$\cos x = 3 \cos x - 2 \\ 2 = 3 \cos x - \cos x \\ 2 = 2\cos x \\ \cos x = \frac{2}{2} \\ \cos x =1 \\ \cos x =\cos 0 \degree \\ \huge \red{ \boxed{x = 0 \degree}} \\$

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