Trig - Unit 7 Review

• 120°

• 30°

• 150°

• -30°

• 60

• Does not exist

If you have a binomial expression that contains a radical in the denominator, you can clear that radical out by multiplying by its ______________.

• Conjugate

• Inverse

• Reciprocal

• Identity

Using a sum/difference formula, what is the exact value of cos 105°?

• 240°

• Does not exist

• 120°

Using a half angle formula, what is the exact value of cot 112.5°?