How do you calculate the angles in a triangle?

Answer 1

The angles in a triangle add up to 180 so one can calculate depending on the type of question or information given. For example;when one is given a scalene triangle, one can calculate the missing angle by equating all the angles to 180 and then find the missing one.

Answer 2

Add the two angles you have and then take 180 minus the number you got.

All (ALL) triangle add up to 180 degrees.

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If you are given two, add the two angles up and subtract the sum by 180. That is the degree of that angle You can find the missing angles by one of 2 ways:

If you know the other 2 angles you can subtract them from 180.

There is a total of 180 degrees in a triangle and subtracting the other 2 gives you the third.

OR

If you only know the side lengths you can use Sin, Cos, Tan, etc. trigonometric functions to find it.

You use the SOHCAHTOA method for this.

Sin= Opposite side/Hypotenuse

Cos= Adjacent side/Hyoptenuse

Tan= Opposite side/Hypotenuse

so if you have angle x and you know the side opposite is 4 and the hypotenuse is 5

Sin X=4/5

Answer 3

using a protractor.

and vertical angles are called revolution angles

Answer 4

Right angle triangles have a 90 degree angle and 2 acute angles that add up tp 90 degrees.