Math Is Fun Forum

Oggi

Member

Registered: 2017-07-10

Posts: 2

Solving Triangle

Can people please help with the following

The triangle FGH has angle 38 at F, while sides FG and FH have lengths 5.5cm and 4.5cm respectively.
(a) Draw a diagram of the triangle
(b) Find the sizes of all angles and lengths of all sides for the triangle FGH (Would I use the Law of Sine or Law of Cosine or something else?)
(c) Check your answers by using a property of triangles not previously used in (b) (what does it mean by this?)

zetafunc

Moderator

Registered: 2014-05-21

Posts: 2,440

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Re: Solving Triangle

Are you able to draw a picture?

First, determine the length of the side GH, using the cosine law. Then, you should be able to work out the other angles from there, since you already know one of them.