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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

You can use $$e^{i \theta} = \cos \theta + i \sin \theta$$