SOLUTION: Triangle ABC has side a = 11, b = 14
and c = 17.
Find the measure of angle A to the nearest whole number.
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Question 999906: Triangle ABC has side a = 11, b = 14
and c = 17.
Find the measure of angle A to the nearest whole number.
Found 2 solutions by Alan3354, MathLover1:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Triangle ABC has side a = 11, b = 14
and c = 17.
Find the measure of angle A to the nearest whole number.
=============
Use the Cosine Law
---
a^2 = b^2 + c^2 - 2bc*cos(A)
Answer by MathLover1(20855) (Show Source): You can put this solution on YOUR website!
Triangle ABC has side , and .
use The Law of Cosines (also called the Cosine Rule)
°
°
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