Question

sin²1+sin²3+sin²87+sin²89 ?​

Answer 1

Answer:

${ \sin }^{2} 1 + { \sin}^{2} 3 + { \sin}^{2} 87 + { \sin }^{2}89$

${ \cos}^{2} 89 + { \cos}^{2} 87 + { \sin }^{2} 87 + { \sin }^{2} 89 = 1 + 1 \\ = 2$

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Answer 2

Step-by-step explanation:

$sin { }^{2} 1 + sin {}^{2} 3 + sin {}^{2} 87 + sin {}^{2}89 \\ cos {}^{2}89 + cos {}^{2}87 + sin {}^{2} 87 + sin {}^{2} 89 \\ = 1 + 1 \\ = 2 \\ this \: is \: your \: answer \\ \:$