Ask questions and get helpful answers.

Which of the following are also representations of (2.5, 135 degrees)? Select all that apply. [2 answers]

a. (2.5, -225 degrees)
b. (-2.5, -225 degrees)
c. (-2.5, 45 degrees)
d. (-2.5, -45 degrees)
e. (-2.5, 315 degrees)

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩

5 answers

  1. Clearly not both A and B, since they have the same angle, but opposite values for r.
    A is correct, since 135-360 = -225

    Now, if you want r to be -2.5, then your angle needs to be in the opposite direction, or
    135-180 = -45. That would be D

    Try actually plotting the point and seeing which angles get there, using positive and negative values for r.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  2. what is 135-360?

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  3. 135-360=-225

    But how do determine the first number?

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  4. Ignore that question.

    Are the answers A and B?

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  5. don't know if anyone else had to give three answers to this, but e is also correct

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Answer this Question

Related Questions

Still need help?

You can ask a new question or browse existing questions.