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.
All you need to do is find one base angle, since in an isosceles triangle, both those angles are opposite equal sides, and are therefore equal. Edit: Now that I see your image, You have enough information to find everything. 1  You can use the Pythagorean Theorem to obtain the altitude (the unknown side in the middle.).