[tex]sin^{2}[/tex]45° - [tex]cos^{2}[/tex]60°. Created by sansahaste. geometriya-ru

tex]60°...

sansahaste @sansahaste

July 2022 1 15 Report

[tex]sin^{2}[/tex]45° - [tex]cos^{2}[/tex]60°

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Miroslava227

Ответ:

$\sin {}^{2} (45 ^ {\circ}) - \cos {}^{2} (60 ^ {\circ}) = {( \frac{ \sqrt{2} }{2} )}^{2} - {( \frac{1}{2} )}^{2} = \\ = \frac{1}{2} - \frac{1}{4} = \frac{1}{4} = 0.25$

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