Hello, qbkr21!

Is there any way that you can solve the following problems by using your calculator?

No, your calculator will give you a decimal answer.

It may have ten decimal places, but it is notexact.

You are expected to know these identities:

. .

. .

. .

. π/12 is in Q1; tangent is positive.

We have:. .

Rationalize: .

. 5π/12 is in Q1; sine is positive

We have: .

. 11π/12 is in Q2; cosine is negative.

We have: .