Follow these instructions to unclog your air conditionerâs drain line. 1  Step 1: Get out your wet/dry vacuum. 2  Step 2: Find the main drain line outside of your home. 3  Step 3: Connect the wet/dry vacuum hose to the main drain line.  Step 4: Check the vacuum for algae water and other debris.
The base angles theorem states that if the sides of a triangle are congruent (Isosceles triangle)then the angles opposite these sides are congruent.
â140 ï¯ Reference Angle Theorem A trigonometric function of an angle and its reference angle are the same, except, perhaps, for a difference in sign. 3.1 Reference Angles (2 of 24) Example 1A Find the sign of all angles that have a reference angle of 30 ï¯ .