Question

What is cos θ if sec θ = 2?

Answer 1

`\bf cos(\theta)=\cfrac{1}{sec(\theta)}\qquad \qquad \boxed{sec(\theta )=2}\implies cos(\theta)=\cfrac{1}{\boxed{2}}`

Answer 2

the value of cos θ is
`(1)/(2)`.

Explanation:

Since,
`cos\theta=(1)/(sec\theta)`

we are given with sec θ = 2

To find the value of cos θ , we use this fact
`cos\theta=(1)/(sec\theta)`

put sec θ = 2 in
`cos\theta=(1)/(sec\theta)`

`cos\theta=(1)/(2)`

Therefore, the value of cos θ is
`(1)/(2)`.