Trigonometric Functions (id: 1f2485813)

本题目来源于试卷: Trigonometric Functions，类别为 IB数学

[填空题]
$\text { Given that } \cos x=\frac{3}{4} \text {, where } 0 \lt x \lt \frac{\pi}{2} \text {, find the value of } \sin 4 x \text {. }$   

参考答案: 0.25±2%


本题详细解析:

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