Ask Question
2 June, 20:52

Find the exact value of : cos (2 arctan (4/3))

+5
Answers (1)
  1. 2 June, 22:33
    0
    Cos (2 arctan (4/3)) = cos (2 arccos (3/5)) = cos^2 (arccos (3/5)) - sin^2 (arccos (3/5)) = cos^2 (arccos (3/5)) - sin^2 (arcsin (4/5)) = (3/5) ^2 - (4/5) ^2 = 9/25 - 16/25 = - 7/25.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Find the exact value of : cos (2 arctan (4/3)) ...” 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