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Duke University

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UCLA

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Unweighted GPA:** 3.7**

1.0

4.0

SAT: **720 math**

200

800

| **800 verbal**

200

800

Low accuracy (4 of 18 factors)

Hey peeps! I'm totally lost on this 30-60-90 triangle stuff in my math class. I know directly learning such stuff is helpful to maximize my SAT Math scores. Could someone possibly explain how these ratios work and why they are important?

a month ago

Sure, happy to help explain 30-60-90 triangle ratios!

These triangles are called special right triangles because they have very particular properties and ratios between their sides that make calculations easier. Here is how these ratios work in a 30-60-90 triangle:

1. The short leg, opposite the 30-degree angle, is half the length of the hypotenuse (the longest side, which is opposite the 90-degree angle).

2. The long leg, opposite the 60-degree angle, is equal to the short leg multiplied by sqrt(3) or, alternatively, it is the hypotenuse times sqrt(3)/2.

3. The hypotenuse, as mentioned, is twice the length of the short leg.

So, if the length of the short leg is 'a', then the length of the long leg would be 'a * sqrt(3)', and the hypotenuse would be '2 * a'.

To understand why these ratios matter, let's talk about their significance.

Firstly, the concept of ratio is fundamental in geometry and trigonometry, it helps us compare and find relationships between quantities. Understanding these ratios of a 30-60-90 triangle refines your understanding of these concepts and helps in problem-solving.

Secondly, knowing these ratios comes in handy during tests like the SAT, where working efficiently is crucial. With these ratios in your mental toolbox, you can solve relevant questions more quickly without using the Pythagorean theorem each time.

Lastly, 30-60-90 triangles often appear in the real world, especially in fields like engineering, physics, and architecture. So, getting a firm handle on these fundamentals may aid you in your future studies or career.

Keep practicing these until they come naturally to you. It's going to make your study of trigonometry and SAT Math more smooth sailing. Hope this helps!

a month ago

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