How do you find the missing side length for a 45-45-90 triangle?
2 answers:
It kind of depends on which side is missing. Here are some facts about a 45-45-90 triangle that will be helpful if you know which one to use: -- The two "legs" have the same length. -- Each leg is (1/2 · √2) times (the hypotenuse). -- The hypotenuse is (√2) times the length of either leg. -- For either of the acute angles ... ... The tangent of the angle is 1. ... The sine and the cosine of the angle are both (1/2 · √2).
Well lets just say you were only given 2 sides of the triangle and 1 side equals 90 degree and the other 45 like you said and the you are going to add up 90+45=135 and then subtract that number from 180 degrees which equals 45
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