Question

if two sides of triangle are equal and one is not equal how to sum it​

Answer 1

Answer:

This relates to the Triangle inequality if the sides of a triangle are x, y, z then z≤x+y , equality only happens in the degenerate case when the sides all colinear and the triangle has zero area.

You can do it on a sphere. See Spherical trigonometry.

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Looking at the attached drawing you can see inaccuracies in the way its draw. To properly look at this we can measure distances with a graphic program. I've cropped the image and found the pixel positions of where the three corners of the triangle are (6,207), (3560,930), (5967,741). Using Pythagoras we can find the edge lengths in pixels 5984.870675, 3626.795417, 2414.40883. If we scale these lengths so the longest is 5in the other lengths turn out to be 3.030969747 and 2.017093569. Slightly more than 3 and 2 and we see the triangle inequality holds.

Answer 2

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