Trigonometric ratios
نص القصة المصورة
- Lia, can you teach me what trigonometric ratios are? I was not present in our math class yesterday because I'm sick.
- The trigonometric ratios are the relationships of the two sides of a right triangle. These sides are labeled as the opposite side, the adjacent side, and the hypotenuse, which is the longest side.
- How do I know where the opposite side and adjacent side are?
- The opposite side and the adjacent side are determined through the reference angle, which is any of the acute angles of a right triangle.
- What do you mean by that?
- The opposite side is the side opposite of the reference angle, while the adjacent side is the side beside or next to the reference angle other than the longer side.
- Oh okay. How about the six trigonometric ratios?
- The relationships of the two sides of a right triangle are described by the trigonometric ratios such as sine (sin), cosine (cos), tangent (tan), cosecant (csc), secant (sec), and cotangent (cot).
- Is there a way to make them easy to remember whenever i will solve trigonometric ratios?
- Just remember the mnemonic SOHCAHTOA when solving trigonometric ratios. SOH stands for sine equals opposite over hypotenuse; CAH means cosine equals adjacent over hypotenuse; and TOA stands for tangent equals opposite over adjacent.
- Wow! Thank you so much for teaching me!
- You’re welcome!
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