Why is sin(20) = sin(160) = -sin(200) = -sin(340)?

7 Answers

Relevance
  • Duck
    Lv 7
    8 months ago

    Because it 's a repeating function.

    • Commenter avatarLog in to reply to the answers
  • Jim V
    Lv 7
    8 months ago

    Notice that each of the numbers is 20° off of the X axis.

    That is why.

    160° and 200° are 20° off of 180°

    340° is 20° off of 360° (or 0°) and is the same thing as -20°.

    And 200° and 340° are on the negative side.

    Thus the sine distance from the X axis is the same in all cases.

    (The last two being on the negative side.)

    • Commenter avatarLog in to reply to the answers
  • 8 months ago

    sin is not about numbers...TIRH

    • Commenter avatarLog in to reply to the answers
  • 8 months ago

    I am curious what this has to do with Religion.

    • Commenter avatarLog in to reply to the answers
  • What do you think of the answers? You can sign in to give your opinion on the answer.
  • Atheists will tell you SIN doesn’t exist

    • Commenter avatarLog in to reply to the answers
  • Marco
    Lv 5
    8 months ago

    I don't know. That's very weird. I never claimed to have a head for math. I only claimed that I don't believe gods exist. 

    • Commenter avatarLog in to reply to the answers
  • Because sine waves are periodic, symmetrical and are odd functions

    • Mercuri
      Lv 7
      8 months agoReport

      This is the correct answer

    • Commenter avatarLog in to reply to the answers
Still have questions? Get answers by asking now.