Start learning →

Odd function or even function?

Exercise and reference answers

Items
  1. Item
    sin(−x) = −sin x
    Category
    Odd: f(−x) = −f(x)
  2. Item
    sine
    Category
    Odd: f(−x) = −f(x)
  3. Item
    cos(−x) = cos x
    Category
    Even: f(−x) = f(x)
  4. Item
    cosine
    Category
    Even: f(−x) = f(x)
Categories
  1. Item
    Odd: f(−x) = −f(x)
  2. Item
    Even: f(−x) = f(x)

Explanation

sin reverses sign with x; cos does not. That single fact settles many sign questions. Source: syllabus Maths, Ch 3 Trigonometric Functions.
Continue learning with Quill →

Browse more CBSE Class 11 (Commerce) questions and exercises →