Q. 284.8( 5 Votes )

Prove that: <span

Answer :

formula: – (i)


(iii) a2 + b2 + 2ab = (a + b)2

(iv) a2 – b2 = (a – b)(a + b)


multiplying with, we get

using formula (i) and (ii)

using formula(iii) &(iv)

Dividing with

using formula(v)

[we know that tan 45

therefore L.H.S = R.H.S

Hence, Proved.

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