If in a ∆ABC, ∠C = 900, then prove that .
Given: ∠C = 900
Need to prove:
Here, ∠C = 900 ; sinC = 1
So, it is a Right-angled triangle.
And also, a2 + b2 = c2
Now,
We know that, where R is the circumradius.
Therefore,
[As, sinC = 1]
Therefore,
⇒
⇒ [Proved]