Trigonometry Examples

$\cos (\frac{5 π}{2})$

Step 1

Find the value using the definition of cosine.

$\cos (\frac{5 π}{2}) = \frac{adjacent}{hypotenuse}$

Step 2

Substitute the values into the definition.

$\cos (\frac{5 π}{2}) = \frac{0}{1}$

Step 3

Divide $0$ by $1$ .

$0$

Step 4