Wiskunde Multiple Choice Vraag uit Gricha's Wiskundige Vragenbank

$https://latex.codecogs.com/png.image?\dpi{110} \frac{\cos 60^\circ}{\cosn30^\circ }=$	A. cos 2°
	B. 2
	C. tan 30°
	D. cot 30°
	E. cos 45°

[ 3-4217 - op net sinds 13.11.16-(E)-22.10.2025 ]

Translation in E N G L I S H

$https://latex.codecogs.com/png.image?\dpi{110} \frac{\cos 60^\circ}{\cos30^\circ }=$	A. cos 2°
	B. 2
	C. tan 30°
	D. cot 30°
	E. cos 45°

Oplossing - Solution

$https://latex.codecogs.com/png.image?\dpi{110} \frac{\cos 60^\circ}{\cos30^\circ }=\frac{\frac 12}{\frac{\sqrt 3}{2}}=\frac 12\cdot \frac{2}{\sqrt3}=\frac{1}{\sqrt3}=\frac{1.\sqrt3}{\sqrt3.\sqrt3}=\frac{\sqrt3}{3}=\tan30^\circ$