# Math Help - Trig functions (angles of a triangle)

1. ## Trig functions (angles of a triangle)

Find the angles of a triangle whose sides are in the ratio 2:3:4.
this question corresponds to sin and cosine rule in the book.
please guide me through this question.

2. Originally Posted by kandyfloss
Find the angles of a triangle whose sides are in the ratio 2:3:4.
this question corresponds to sin and cosine rule in the book.
please guide me through this question.
Draw a triangle. Label it ABC. Use the cosine rule to find one of the angles. And again. The third angle is simply 180 degrees minus the sum of your first two angles.