2. Halle el valor numérico de \[ H=2 \cos 180^{\circ} \cdot \sec 360^{\circ} \cdot \csc 270 \] \( \begin{array}{lll}\text { A) }-1 & \text { B) }-2 & \text { C) } 0 \\ \text { D) } 1 & \text { E) } 2 & \end{array} \)

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

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.

В треугольнике \( A B C \) угол \( C \) равен \( 90^{\circ}, B C=72 \) \( A B=75 \). Найдите \( \cos B \).

Convert the angle \( \theta=\frac{5 \pi}{12} \) radians to degrees. Express your answer exactly. \( \theta=\square \)