**Concept: The question tests on basics of Triangles**

**Solution:**

In a 45 - 45 - 90 triangle the ratio of sides opposite to 45 45 90 = 1 : 1 : 2√2

Therefore 1/√2=5/x

x = 5√2**Option B**

Modified on: Tue, 12 Oct, 2021 at 2:15 PM

**Concept: The question tests on basics of Triangles**

**Solution:**

In a 45 - 45 - 90 triangle the ratio of sides opposite to 45 45 90 = 1 : 1 : 2√2

Therefore 1/√2=5/x

x = 5√2**Option B**

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