Question

cos 30°
answer
\\(dfrac{sqrt{3}}{2}\\)
\\(dfrac{sqrt{2}}{2}\\)
\\(dfrac{1}{2}\\)
\\(sqrt{3}\\)

Explanation:

Step1: Recall 30° cosine value

From standard trigonometric values, $\cos 30^\circ$ corresponds to the ratio of the adjacent side to the hypotenuse in a 30-60-90 right triangle, where this ratio is $\frac{\sqrt{3}}{2}$.

Answer:

$\frac{\sqrt{3}}{2}$