This article is a summary of a YouTube video "Trigonometry" by The Organic Chemistry Tutor

Understanding Trigonometry: Introducing the SOHCAHTOA Expression

TLDRLearn about the SOHCAHTOA expression, which helps remember trigonometry formulas for sine, cosine, and tangent. It involves the ratios of the opposite, adjacent, and hypotenuse sides in a right triangle.

Key insights

🔵The SOHCAHTOA expression helps remember trigonometry formulas for sine, cosine, and tangent.

🟢Sine measures the ratio of the opposite side to the hypotenuse in a right triangle.

🟡Cosine measures the ratio of the adjacent side to the hypotenuse in a right triangle.

🟠Tangent measures the ratio of the opposite side to the adjacent side in a right triangle.

🔴Special right triangles, like the 3-4-5 triangle, can be used to find missing side lengths in right triangles.

Q&A

What is the purpose of the SOHCAHTOA expression?

The SOHCAHTOA expression helps us remember the formulas for sine, cosine, and tangent in trigonometry.

How is sine defined?

Sine measures the ratio of the opposite side to the hypotenuse in a right triangle.

What does cosine measure?

Cosine measures the ratio of the adjacent side to the hypotenuse in a right triangle.

What is the definition of tangent?

Tangent measures the ratio of the opposite side to the adjacent side in a right triangle.

How can special right triangles be used?

Special right triangles, like the 3-4-5 triangle, have ratios that can be used to find missing side lengths in right triangles.

Timestamped Summary

00:01This video introduces the SOHCAHTOA expression for trigonometry.

00:12The SOHCAHTOA expression helps remember trigonometry formulas for sine, cosine, and tangent.

01:00Sine measures the ratio of the opposite side to the hypotenuse in a right triangle.

01:40Cosine measures the ratio of the adjacent side to the hypotenuse in a right triangle.

02:22Tangent measures the ratio of the opposite side to the adjacent side in a right triangle.

03:34Special right triangles, like the 3-4-5 triangle, can be used to find missing side lengths in right triangles.