The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Can you spot which identity works and which ones don’t? In this quiz, you’ll match trigonometric statements to the correct sum or difference formula, checking your understanding of sine, cosine, and tangent identities. Some will be in degrees, others in radians, and all will challenge you to think carefully...see moreabout signs and formulas. We bring you this quiz to strengthen your proof and recognition skills. see less
2)
We’ll put your name on your report, certificate, and leaderboard.
Submit
Submit
Submit
Submit
Submit
Submit
Submit
Submit
Submit
Submit
Submit
Submit
Submit
Submit
Submit
Submit
Submit
Submit
Submit
View My Results
Quiz Review Timeline (Updated): Oct 12, 2025 +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.