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kodGreya [7K]
3 years ago
15

Cos x + square root 3 = -cos x

Mathematics
1 answer:
slava [35]3 years ago
5 0

Answer:

\cos x + \sqrt{3} = -\cos x\\2\cos x = -\sqrt{3}\\\cos x =-\frac{\sqrt{3}}{2}\\x=\frac{\pi}{6}

(the other solutions can be obtained by adding 2pi as many times as you want)

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What is the value of r for 19 and 20?
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Answer:

19.) r = -4    20.) r = 1

Step-by-step explanation:

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y - y1 = m(x - x1)

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