三角関数計算の基礎: $3$\displaystyle{\cos x}$ 編

$3$\displaystyle{\cos \( - {\theta} \) =\cos {\theta}}$	⇒
$3$\displaystyle{\cos \( \frac{\hspace{2}{\pi}\hspace{2}}{\hspace{2}2\hspace{2}}- {\theta} \) =\sin {\theta}}$	⇒
$3$\displaystyle{\cos \( \frac{\hspace{2}{\pi}\hspace{2}}{\hspace{2}2\hspace{2}}+{\theta} \) =- \sin {\theta}}$	⇒
$3$\displaystyle{\cos \( {\pi}- {\theta} \) =- \cos {\theta}}$	⇒
$3$\displaystyle{\cos \( {\pi}+{\theta} \) =- \cos {\theta}}$	⇒

戻る

[さ]
[さ行]
[索引トップ]