📐 Mathematics

sin(90° - θ) equals:

A sin θ
B cos θ
C -sin θ
D -cos θ

✓ Correct Answer: Option B

sin(90°-θ) = cos θ (complementary angle identity).

💡 Why is B) the correct answer?

The correct answer to the question "sin(90° - θ) equals:" is Option B: cos θ.

The other options — A) sin θ, C) -sin θ, D) -cos θ — are incorrect for this Mathematics question. As explained above: sin(90°-θ) = cos θ (complementary angle identity).

📚 About This Mathematics Practice Question

This 1-level Mathematics question from the Advanced Mathematics topic is part of One Paper Preparation's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free Mathematics practice test or use flashcards for spaced repetition review.

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