Question

please give me answer of maths question 2​

Answer 1

_________________________

$\huge\color{cyan}\boxed{\colorbox{black}{♡Answer :-♡}}$

$( {sin}^{4} a - {cos}^{4} a + 1). {cosec}^{2} = 2\\ \\ (( {sin})^{2^{2} } a - ({cos})^{2^{2} } a) + 1). {cosec}^{2} = 2 \\ \\ (( {sin}^{2} a + {cos}^{2} a)( {sin}^{2} a - {cos}^{2} a ) + 1) . {cosec}^{2}a = 2 \\ \\ (1( {sin}^{2} a - {cos}^{2} a ) + 1). {cosec}^{2} a = 2 \\ \\ ( {sin}^{2} a - {cos}^{2} a + 1). \frac{1}{ {sin}^{2}a } = 2 \\ \\ ( {sin}^{2} a + {sin}^{2} a ). \frac{1}{ {sin}^{2}a } = 2\: \\ \\ (2 {sin}^{2} a) \frac{1}{ {sin}^{2} a} = 2 \\ \\ 2 = 2 \\ \\ hence \: proved$

_________________________

plz mark as the brainliest !