SOLUTION: the measure of an isosceles triangle are 21, 21, and 8. Find the measure of a base angle to the nearest degree?
Algebra ->
Triangles
-> SOLUTION: the measure of an isosceles triangle are 21, 21, and 8. Find the measure of a base angle to the nearest degree?
Log On
Question 715774: the measure of an isosceles triangle are 21, 21, and 8. Find the measure of a base angle to the nearest degree? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! the measure of an isosceles triangle are 21, 21, and 8. Find the measure of a base angle to the nearest degree?
----------------
The altitude from the vertex bisects the base and forms a right triangle with side = 4 and hypotenuse = 21
cos(base angle) = 4/21
angle =~ 79 degs
