Question

Value of Sin ²40 + cos²40 is​

Answer 1

$\red{ Value\: of \: sin^{2} 40 + cos^{2} 40 }$

$= 1$

/* By Trigonometric Identity */

$\boxed{ \pink { sin^{2} A + cos^{2} A = 1 }}$

Therefore.,

$\red{ Value\: of \: sin^{2} 40 + cos^{2} 40 }\green { = 1 }$

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