# Expand Using Sum divide Difference Formulas cos(forty minus five)

The angle is an angle where the values of the six trigonometric functions are known. Because this is the case, Sum to keep the value the same.

Use the sum formula for cosine to Clarify the expression. The formula states that .

The exact value of is .

The exact value of is .

The exact value of is .

The exact value of is .

First, multiply by .

First, multiply by .

Add and .

The result can be displayed in a variety of ways.

Exact Form:

Decimal Form:

Do you need help with solving Expand Using Sum/Difference Formulas cos(45)? We can help you. You can write to our math experts in our application. The best solution for you is above on this page.