Question

plz solve 12th q quickly fast with explain

Answer 1

Heya mate, Here is ur answer

$\red{\mathbb{PLS\: REFER\: TO \:THE\: \:ATTACHMENT}}$

Identities used -

Sin^2 Theta + cos ^2 theta =1

(a+b)^2= a^2 + b^2 + 2ab

(a-b)^2= a^2+b^2-2ab

Hence

a^2+b^2=x^2+y^2

Hence proved

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@Laughterqueen

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