# Find the Exact Value cos((five pi) First, divide four)

Use the reference angle by calculating the angle with equivalent triginometric values in the Initially quadrant. Make the expression negative because cosine is negative in the third quadrant.

The exact value of is .

The result can be displayed in a variety of ways.

Exact Form:

Decimal Form:

Do you need help with solving Find the Exact Value cos((5pi)/4)? We can help you. You can write to our math experts in our application. The best solution for you is above on this page.