CHAPTER 4 REVIEW EXERCISES

CONCEPT CHECK EXERCISES

Determine each of the following as being either true or false.
  1. A standard position angle of 205 °  is a second-quadrant angle.

  2. In Example 2 of Section 4.2, if the terminal side passes through (6, 8) the values of the trigonometric functions are the same as those shown.

  3. csc θ and sin − 1θ are the same.

  4. In a right triangle with sides a, b, and c, and the standard angles opposite these sides, if A = 45 °  ,  then a = b . 

  5. In Example 2 of Section 4.5, if the angle of elevation from the north goal line to the blimp is 58.5 ° , the solution is the same.

  6. If an angle has a cosine of 0.2, then the secant of the angle is 5.

PRACTICE AND APPLICATIONS

In Exercises 710, find the smallest positive angle ...

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