Question Detail
Question
Simplify (csc y + cot y)(csc y - cot y)
Correct Answer
Option A is the correct answer.
Detailed Explanation
(csc y + cot y)(csc y - cot y) = csc²y - cot²y. Using the identity csc²y = 1 + cot²y, we get csc²y - cot²y = 1.
Hint
Use the difference of squares formula and trigonometric identities.