Question

if cos30=root 3 upon 2 then find sec 30=?

Answer 1

$\frac{2}{ \sqrt{3} }$
the answer is 2 upon root 3

cosø =1/secø

Answer 2

Given :-

$cos \: 30 = \frac{ \sqrt{3} }{2}$

To find :- Sec 30° = ?

$\bf{Solution}$:-

We know that

Cos A = 1/Sec A

Now Sec 30° =1/ cos 30°

$sec \: 30 = \frac{1}{ \frac{ \sqrt{3} }{2} }$

$sec \: 30 = \frac{2}{ \sqrt{3} }$


$\bf{Check}$

Cos A × Sec A = 1

So, cos 30° × sec 30° =1

$= > \frac{ \sqrt{3} }{2} \times \frac{2}{ \sqrt{3} } = 1$


$= > 1 = 1$