educir: \( \sqrt{\left(\operatorname{Sen}^{2} x-\operatorname{Cos}^{2} x\right)\left(\operatorname{Sen}^{4} x+\operatorname{Cos}^{4} x\right)+\operatorname{Cos}^{8} x} \)

Convert the angle \( \theta=230^{\circ} \) to radians. Express your answer exactly. \( \theta=\square \) radians

Use a calculator to find \( \tan 27^{\circ} \). Round to the nearest thousandth.

Convert the angle \( \theta=\frac{3 \pi}{5} \) radians to degrees. Express your answer exactly.

Use a calculator to find \( \tan 15^{\circ} \). Round to the nearest thousandth.

Simplify fally: \( \sin \left(90^{\circ}-x\right) \cdot \cos \left(180^{\circ}+x\right)+\tan x \cdot \cos x \cdot \sin \left(x-180^{\circ}\right) \) 5.2 Prove, WrTHOUT using a calculator, that \( \frac{\sin 315^{\circ} \cdot \tan 210^{\circ} \cdot \sin 190^{\circ}}{\cos 100^{\circ} \cdot \sin 120^{\circ}}=\frac{-\sqrt{2}}{3} \)