### Home > PC > Chapter 6 > Lesson 6.2.1 > Problem 6-74

6-74.

Christina stared at the equation tan

*x*=. “That’s interesting,” she thought. “Since tan *x*=, this must mean that sin*x*= 3 and cos*x*= 7. But that’s impossible.” Homework Help ✎Why is it impossible?

What’s going on here?

Find

*x*if 0 ≤*x*≤ 2*π*.

What is the range of sine and cosine?

There is another solution. Use the unit circle to help you calculate the second solution.