TrigonometryHardSum, Difference, and Multiple-Angle Formulas ShareSum, Difference, and Multiple-Angle Formulas · Hard problemFind the exact value of tanπ8\tan\dfrac{\pi}{8}tan8π using π8=12⋅π4\dfrac{\pi}{8}=\dfrac12\cdot\dfrac{\pi}{4}8π=21⋅4π.Check Show answer Walk through it step by step Practice more like this Review this concept