Question

Cum se calculează 2 • 6 • sin 45 totul supra 2 calcul complet dau coroana

Answer 1

 

$\displaystyle\bf\\ \sin45^o=\frac{\sqrt{2}}2}\\\\\frac{2\cdot6\cdot\sin45^o}{2}=\\\\=\frac{2\cdot6\cdot\dfrac{\sqrt{2}}{2}}{2}=\\\\=\frac{~~\dfrac{2\cdot6\cdot\sqrt{2}}{2}~~}{2}=\\\\=\frac{6\cdot\sqrt{2}}{2}=\\\\=\boxed{\bf3\sqrt{2}}$

Answer 2

Explicație pas cu pas:

( 2 · 6 · sin 45° ) / 2 =

sin 45° = √2 / 2

( 2 · 6 · sin 45° ) / 2 =

= ( 2 · 6 · √2 / 2 ) / 2

=  ( 12 · √2 / 2 ) / 2 ( simplificăm 2 cu 12 )

= ( 6√2 ) / 2

= 3√2