Exam 5: Identities and Formulas

Evaluate the expression without using a calculator. ​

Prove that the identity is true.

Verify the identity.

Find the exact value for the following. ​

Show that the following is true.

Find the identical expression for the following. ​

Simplify the expression.

Use your graphing calculator to determine if the equation appears to be an identity or not by graphing the left expression and right expression together.

Use half-angle formulas to find the exact value for the following: ​ ​

Prove the identity.

If   with A  in QIV, find ​

From the list below find the expression, identical to the given. ​

Find the identical expression for the following. ​

Find the identical expression for the following. ​

Prove that the identity is true.

If with A in QII find . ​

Prove the identity.

Prove that the identity is true. ​

Find the identical expression for the following. ​

Write a formula for by writing as and using the formula for the cosine of a sum.