第5部 数学公式集
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$\pi/2$の移動 | $\pi$の移動 | $2\pi$の移動 | ||||||||||
$sin(\theta+\frac{\pi}{2})=+cos\theta$ | $sin(\theta+\pi)=-sin\theta$ | $sin(\theta+2\pi)=+sin\theta$ | ||||||||||
$cos(\theta+\frac{\pi}{2})=-sin\theta$ | $cos(\theta+\pi)=-cos\theta$ | $cos(\theta+2\pi)=+cos\theta$ | ||||||||||
$tan(\theta+\frac{\pi}{2})=-cot\theta$ | $tan(\theta+\pi)=+tan\theta$ | $tan(\theta+2\pi)=+tan\theta$ |