# Question: Does Trigonometry Work On All Triangles?

## Is Sohcahtoa only for right angled triangles?

Q: Is sohcahtoa only for right triangles.

A: Yes, it only applies to right triangles.

If we have an oblique triangle, then we can’t assume these trig ratios will work.

A: They hypotenuse of a right triangle is always opposite the 90 degree angle, and is the longest side..

## What types of triangles do we use trigonometry for?

Solving Triangles Trigonometry is also useful for general triangles, not just right-angled ones . It helps us in Solving Triangles. “Solving” means finding missing sides and angles.

## What is the formula for any triangle?

The area of a triangle can be expressed using the lengths of two sides and the sine of the included angle. AreaΔ = ½ ab sin C. You may see this referred to as the SAS formula for the area of a triangle.

## How do you use trigonometry on non right triangles?

Given two sides and the angle between them (SAS), find the measures of the remaining side and angles of a triangle.Sketch the triangle. … Apply the Law of Cosines to find the length of the unknown side or angle.Apply the Law of Sines or Cosines to find the measure of a second angle.More items…

## What is the formula for 30 60 90 Triangle?

Using the Pythagorean Theorem, (1)^2 + (√3)^2 = (2)^2 or 1 + 3 = 4. This ratio will be true of every 30-60-90 triangle. The second concept is to find the other sides if you know one of the sides is 1. If the one is opposite the 30, the ratio is simple 1, √3, 2.

## Is Pythagorean theorem only for right triangles?

Pythagoras’ theorem only works for right-angled triangles, so you can use it to test whether a triangle has a right angle or not.

## Can you use law of cosines on right triangles?

In this case the tool is useful when you know two sides and their included angle. From that, you can use the Law of Cosines to find the third side. It works on any triangle, not just right triangles. where a and b are the two given sides, C is their included angle, and c is the unknown third side.

## Which Triangle is a 30 60 90 Triangle?

right triangleA 30-60-90 triangle is a special right triangle (a right triangle being any triangle that contains a 90 degree angle) that always has degree angles of 30 degrees, 60 degrees, and 90 degrees.

## Does sin cos and tan only work for right triangles?

The Sine Rule can be used in any triangle (not just right-angled triangles) where a side and its opposite angle are known. You will only ever need two parts of the Sine Rule formula, not all three. … Remember that each fraction in the Sine Rule formula should contain a side and its opposite angle.

## Does trigonometry apply to all triangles?

No, they work for all triangles. The word, trigonometry, itself stems from Greek, and it means measuring triangles. There are rules that only pertain to right triangles, but they are really just the special case where one angle is 90 degr. A limited, if important, use.

## Does trigonometry work for non right triangles?

So far, we’ve only dealt with right triangles, but trigonometry can be easily applied to non-right triangles because any non-right triangle can be divided by an altitude * into two right triangles.

## Does the Pythagorean apply to all triangles?

Note that the Pythagorean Theorem only works with right triangles. You can use the Pythagorean Theorem to find the length of the hypotenuse of a right triangle if you know the length of the triangle’s other two sides, called the legs. Put another way, if you know the lengths of a and b, you can find c.

## Who is the father of trigonometry?

HipparchusThe first trigonometric table was apparently compiled by Hipparchus, who is consequently now known as “the father of trigonometry”.

## What does SOH CAH TOA stand for?

sine equals opposite over hypotenuse”SOHCAHTOA” is a helpful mnemonic for remembering the definitions of the trigonometric functions sine, cosine, and tangent i.e., sine equals opposite over hypotenuse, cosine equals adjacent over hypotenuse, and tangent equals opposite over adjacent, (1)