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Which of the following is true for all angles A?

Practice Questions

Q1
Which of the following is true for all angles A?
  1. sin^2 A + cos^2 A = 1
  2. tan A = sin A/cos A
  3. sec A = 1/cos A
  4. All of the above

Questions & Step-by-Step Solutions

Which of the following is true for all angles A?
  • Step 1: Understand that the question is asking about identities related to angles.
  • Step 2: Identify the identities provided in the question (not listed here).
  • Step 3: Recall that trigonometric identities are equations that are true for all angles.
  • Step 4: Verify each identity to see if it holds true for any angle A.
  • Step 5: Conclude that if all identities are verified, then they are true for all angles A.
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