please solve this with solution !!!
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CotA=b/a
By constructing a triangle we get the third side as √a^2+b^2
Therefore,
a^2-b^2/√a^2+b^2/a^2+b^2/√a^2+b^2
=RHS
By constructing a triangle we get the third side as √a^2+b^2
Therefore,
a^2-b^2/√a^2+b^2/a^2+b^2/√a^2+b^2
=RHS
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