Question

Given cosine of x is equal to the square root of 3 over 2 comma what is the value of cos(x + π)?

Answer 1

The cosine function has the following property:

`\cos (x+\pi)=-\cos (x)\text{.}`

In this problem, we have:

`\cos (x)=\frac{\sqrt[]{3}}{2}\Rightarrow\cos (x+\pi)=-\frac{\sqrt[]{3}}{2}\text{.}`

Answer

`-\frac{\sqrt[]{3}}{2}`