3sin^2 a+23+3cos^2 a

Question

3sin^2 a+23+3cos^2 a

Answer 1

3.sin²a+23+3.cos²a=3.sin²a+3.cos²a+23=
=3(sin²a+cos²a)+23=3.1+23=3+23=26

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Огромное спасибо