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Home > INT3 > Chapter 10 > Lesson 10.3.3 > Problem 10-188

10-188.

Solve each equation for . You may need your calculator, but remember that your calculator only gives one answer. Most of these problems have more than one answer. Think about all four quadrants of a graph. Homework Help ✎

  1. Where is the ? Remember sin is the -value. What would be at those places?

    or

  1. Where is the ? Remember cos is the -value. What would be at those places?

  1. Solve for the . Draw a unit circle. Where is the of that value?

  1. Use your calculator to get one of the values. Then use symmetry to get the other 3 values. There are 4 values because when you take the square root of both sides the answer would be plus or minus!