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30-60-90 Special Right Triangles Formula Help?

Hey everyone, I've been having trouble understanding the 30-60-90 special right triangles formula in trigonometry. Can anyone here explain it in an easy-to-understand way? I'd appreciate any help you can offer!

5 months ago

Sure, I'd be happy to help you understand the 30-60-90 special right triangle formula! A 30-60-90 triangle is a special type of right triangle where the three angles measure 30 degrees, 60 degrees, and 90 degrees. The sides of this triangle hold a specific relationship, making it easier to find the side lengths if you know the length of one side.

Here's a quick overview of the ratios for the sides of a 30-60-90 triangle:

1. The side opposite the 30° angle is the shortest side and is often called the "short leg."

2. The side opposite the 60° angle is the middle-length side and is often called the "long leg."

3. The side opposite the 90° angle is the hypotenuse (the longest side).

The relationship between these sides can be expressed as follows:

- Short leg (30° side): x

- Long leg (60° side): x√3

- Hypotenuse (90° side): 2x

The key takeaway here is that the length of the long leg is √3 times the length of the short leg, and the length of the hypotenuse is 2 times the length of the short leg.

Let's go through a quick example to make this even clearer:

Suppose we have a 30-60-90 triangle with a short leg length of 4 units. To find the other sides, you can use the relationships mentioned above:

1. Short leg (30° side): 4

2. Long leg (60° side): 4√3 (since it's √3 times the short leg)

3. Hypotenuse (90° side): 2 4 = 8 (since it is 2 times the short leg)

I hope this clarifies the 30-60-90 special right triangle formula for you! If you have any more questions or need further clarification, feel free to ask.

5 months ago

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