Thread: Finding an angle within this triangle

Hi,

All variables given in blue are known values. I am trying to calculate the angle X in terms of the variables I know. How can I do this?

Hello, Corpsecreate!

All variables given in blue are known values.
I am trying to calculate the angle X in terms of the variables I know.

The sum of the (interior) angles of a triangle is always equal to 180^o.

Hence: .

Got it?

You can calculate the angle between the side and the horizontal, add to that and you have the angle

Originally Posted by Soroban

Hello, Corpsecreate!


The sum of the (interior) angles of a triangle is always equal to 180^o.

Hence: .

Got it?

Angle is the entire interior angle, not just the angle up to the horizontal. will give , will give a number larger than .

Originally Posted by BobP

You can calculate the angle between the side and the horizontal, add to that and you have the angle

The angle side makes with the horizontal is , I dont see how adding to this angle would give me angle ?

NVM: Question has been solved!

The angle side makes with the horizontal is , I dont see how adding to this angle would give me angle ?
NVM: Question has been solved!

The angle referred to is the complement of the one you state, that is,

This will equal the angle below the horizontal at Add and you get

BTW., some labels on the diagram would have helped.