Question 443054
In triangle ABC, angle B is 4 times A and angle C is 12 degrees less than 5 times angle A. Find the size of the angles.
-------------
Equations:
A + B + C = 180
B = 4A
C = 5A-12
------
Substitute and solve for "A":
A + 4A + 5A-12 = 180
10A = 192
A = 19.2 degrees
B = 4A = 76.8 degrees
C = 5A-12 = 84 degrees
==========================
Cheers,
Stan H.
==================



 
The size of angle A is ___ degrees?
The size of angle B is ___ degrees?
The size of angle C is ___ degrees?