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Find the value of \(\theta\) when \(0^\circ \le \theta \le 90^\circ\), such that \(\cos( 5^\circ) = \sin (25^\circ) + \sin (\theta)\). (Give your answer in degrees)

 Dec 17, 2022
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You can use \(e^{i \theta} = \cos \theta + i \sin \theta\)

 

Here, theta works out to 40 degrees.

 Dec 18, 2022

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