Look at the following triangle.
What is the value of X?
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Look at the following triangle.
What is the value of X?
It is important to remember: the Pythagorean theorem is only valid for right-angled triangles.
This triangle does not have a right angle, and therefore, the missing side cannot be calculated in this way.
Cannot be solved
Consider a right-angled triangle, AB = 8 cm and AC = 6 cm.
Calculate the length of side BC.
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