of a 90 degree angle, and two other angles that all should add up to 180 degrees.
Step-by-step explanation:
By Pythagoras' theorem,
12^2 = 11^2 + height^2
height = ±√12^2 - 11^2 (rej -ve value since height > 0)
height = 16.279 (5sf) = 16.3 (nearest tenth place)
Topic: Pythagoras theorem
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So, difference as in subtract? so, if it is, it would be 15. if it means percent difference, it's about 60%.
