Question 22 5 marks Paper 1 Section A Easy No calculator Free
In a right-angled triangle the side opposite \(\theta\) is \(9\) and the hypotenuse is \(15\). \(\theta\) is acute.
(a) Find \(\sin\theta\) and \(\cos\theta\).
(b) Find the exact value of \(\cos 2\theta\).
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