1.

Calculate the length of the unknown side in each of the following right-angles triangles.please answer this question ​

Answer»

Answer:

Length of unknown side = 12cm

Step-by-step explanation:

According to PYTHAGORAS theorem, a² + b² = c² ( hypotenuse)

So, a² + 9² = 15²

a² + 81 = 225

a² = 225 - 81 = 144

therefore, a = 12 CM ( since 12 × 12 = 144)

HOPE it helps



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