+0  
 
0
40
1
avatar+1768 

The sides of a triangle are $2,$ $2,$ and $\sqrt{6} - \sqrt{3}.$  Enter the angles of the triangle in degrees, separated by commas.

 Jan 19, 2024
 #1
avatar+129881 
+1

The triangle is  isosceles....let the base = (sqrt 6   - sqrt (3)

 

cos ( base angle)  = ( [ sqrt  6 -sqrt 3  ] / 2 )  /  2 =    [sqrt 6 - sqrt 3 ]  / 4

 

arccos ( [ sqrt 6 -sqrt 3 ] / 4 )  ≈ 79.7° 

Apex angle =   180 - 2(79.7)   ≈  20.6°

 

Angles are    20.6° , 79.7° , 79.7°

 

 

cool cool cool

 Jan 19, 2024
edited by CPhill  Jan 19, 2024

2 Online Users