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How do you solve $10 cos x - 3 = 0$ $10cosx-3=0$ ?

1 Answer

Jul 11, 2016

$\pm 75^{\circ} 54$ $+- 75^@54$

Explanation:

10cos x = 3
cos x = 0.3
Calculator, and unit circle -->
$x = \pm 75^{\circ} 54$ $x = +- 75^@54$

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