SOLUTION: An isosceles triangle has a vertex angle of 80 degrees and a base of 14 cm. Find the perimeter of the triangle. Draw a Diagram

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Question 964686: An isosceles triangle has a vertex angle of 80 degrees and a base of 14 cm. Find the perimeter of the triangle. Draw a Diagram
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Find the other angle, X,
X%2BX%2B80=180
2X=100
X=50
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Find the other side, Y,
sin%2880%2F2%29=%2814%2F2%29%2FY
Y=7%2Fsin%2840%29
Y=10.89
So then,
P=2Y%2B14
P=35.78cm
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