2 [symbol:rot]cos(2x - 15) = 3
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Trigonometri
Moderatorer: Aleks855, Gustav, Nebuchadnezzar, Janhaa, DennisChristensen, Emilga
ahh, da ble det mye lettere.
[tex]2\sqrt3cos(2x-15)=3[/tex]
[tex]cos(2x-15)=\frac{3}{2\sqrt3}[/tex]
[tex]cos(2x-15)=\frac{\sqrt3}{2}[/tex]
[tex]2x-15=30+n360[/tex] eller [tex]2x-15=330 +n360[/tex]
[tex]2x=45 +n360[/tex] eller [tex]2x=345+n360[/tex]
[tex]x=22,5[/tex] eller [tex]x=202,5[/tex] eller [tex]x=172,5[/tex] eller [tex]x=352,5[/tex]
[tex]2\sqrt3cos(2x-15)=3[/tex]
[tex]cos(2x-15)=\frac{3}{2\sqrt3}[/tex]
[tex]cos(2x-15)=\frac{\sqrt3}{2}[/tex]
[tex]2x-15=30+n360[/tex] eller [tex]2x-15=330 +n360[/tex]
[tex]2x=45 +n360[/tex] eller [tex]2x=345+n360[/tex]
[tex]x=22,5[/tex] eller [tex]x=202,5[/tex] eller [tex]x=172,5[/tex] eller [tex]x=352,5[/tex]