Ask Question
25 July, 01:37

Verify the identity. cos 4u = cos^ (2) 2u - sin^ (2) 2u

+1
Answers (1)
  1. 25 July, 04:42
    0
    cos (4u) = cos² (2u) - sin² (2u)

    cos (2u + 2u) = cos² (2u) - sin² (2u)

    cos (2u) cos (2u) - sin (2u) sin (2u) = cos² (2u) - sin² (2u)

    cos² (2u) - sin² (2u) = cos² (2u) - sin² (2u)
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Verify the identity. cos 4u = cos^ (2) 2u - sin^ (2) 2u ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers