If and , then is always less than or equal to…

MATHEMATICS · Subjective · A Level · Mathematics · Trigonometry · Trigonometry

Problem

If a+b=3−cos⁡4θa + b = 3 - \cos 4\theta and a−b=4sin⁡2θa - b = 4 \sin 2\theta , then abab is always less than or equal to .....

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