4.3 Exercises

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Övning 4.3:1

Bestäm de vinklar \displaystyle \,v\, mellan \displaystyle \,\displaystyle \frac{\pi}{2}\, och \displaystyle \,2\pi\, som uppfyller

a) \displaystyle \cos{v}=\cos{\displaystyle \frac{\pi}{5}} b) \displaystyle \sin{v}=\sin{\displaystyle \frac{\pi}{7}} c) \displaystyle \tan{v}=\tan{\displaystyle \frac{2\pi}{7}}

Övning 4.3:2

Bestäm de vinklar \displaystyle \,v\, mellan 0 och \displaystyle \,\pi\,$ som uppfyller som uppfyller

a) \displaystyle \cos{v} = \cos{\displaystyle \frac{3\pi}{2}} b) \displaystyle \cos{v} = \cos{ \displaystyle \frac{7\pi}{5}}