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Which of the following is true for all angles A?

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Question: Which of the following is true for all angles A?

Options:

  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

Correct Answer: All of the above

Solution: 

All the given identities are true for all angles A.

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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