trigonometry · worked example

Solve cos(30°)

Method: 특수각. Verified step-by-step solution with our free AI math solver.

Problem

$\cos(30°)$

Step-by-step solution

$30$ - $60$ - $90$ 삼각형에서 변의 비는 $1 : \sqrt{3} : 2$ 입니다.
$30°$ 의 코사인 = 밑변/빗변 = $\frac{\sqrt{3}}{2}$ .

Answer

$\cos(30°) = \tfrac{\sqrt{3}}{2}$

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