Ask questions and get helpful answers.

Given that tan25 degrees =a,express tan205 in terms of a.

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
1 answer
  1. How do 25° and 205° relate?
    Well, 205 - 180 = 25

    and since 205° is in quadrant III, we know from the CAST rule
    that the tangent in III is positive, therefore
    tan 205°
    = tan(205-180)°
    = tan 25°
    = a

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    👤
    Reiny

Answer this Question

Related Questions

Still need help?

You can ask a new question or browse existing questions.