Question

Topic : Introduction to surds
Website : Mathswatch

Answer 1

Step-by-step explanation:

$10 \cos(30) - 3 \tan(60)$

Know that

$\cos(30) = \frac{ \sqrt{3} }{2}$

$\tan(60) = \sqrt{3}$

So w e have

$10 \frac{ \sqrt{3} }{2} - 3 \sqrt{3}$

$5 \sqrt{3} - 3 \sqrt{3}$

$2 \sqrt{3}$

Here k is 3.