Question Detail
Question
What is (1 - cos x)/sin x?
Correct Answer
Option D is the correct answer.
Detailed Explanation
Rewrite the expression: (1 - cos x)/sin x = 1/sin x - cos x/sin x = csc x - cot x. Hence, the correct identity is csc x − cot x.
Hint
Split the fraction into two terms over sin x.