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if cosx+sinx=4/3 find 2x and cos 4x
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on Nov 15, 2024 at 3:49 am
You asked:
Given \( \cos\left( x \right) + \sin\left( x \right) = \frac{4}{3} \), evaluate \( 2 x \), \( \cos\left( 4 x \right) \).
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