Ask Question
20 October, 15:35

If cos 3 A = sin (A-22), find A

+1
Answers (1)
  1. 20 October, 15:41
    0
    A = 28

    Step-by-step explanation:

    Using the cofunction identity

    cos x° = sin (90 - x) °

    with x = 3A, then

    90 - 3A = A - 22 (add 3A to both sides)

    90 = 4A - 22 (add 22 to both sides)

    112 = 4A (divide both sides by 4)

    A = 28
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “If cos 3 A = sin (A-22), find A ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers