SOLUTION: In a triangle ABC, angle B is 4 times angle A and angle C is 9 degrees less than 5 times angle A.
Find the size of the angles.
A
B
C
Algebra.Com
Question 391965: In a triangle ABC, angle B is 4 times angle A and angle C is 9 degrees less than 5 times angle A.
Find the size of the angles.
A
B
C
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
b=4a, c=5a-9
a+4a+5a-9=180
10a-9=180
10a=189
a=18.9
b=75.6
c=85.5
.
Ed
RELATED QUESTIONS
triangle ABC, angle B is 5 times angle A and angle C is 14 degrees less than 4 times... (answered by oberobic,palanisamy)
In triangle ABC, the size of angle B is 4 times the size of angle A, and the size of... (answered by Alan3354)
In a triangle ABC, angle B is 4 times angle A, angle C is 2 degrees less than 5 times... (answered by rfer)
in a triangle ABC, angle B is 5 times angle A and angle C is 9 degrees less than 4 times... (answered by Earlsdon)
in a triangle ABC, angle B is four times angle A and angle C is 2 degrees less than 5... (answered by stanbon)
In triangle ABC, the size of angle B is 4 times the size of angle A, and... (answered by Theo)
In triangle ABC, angle B is 4 times A and angle C is 12 degrees less than 5 times angle... (answered by swincher4391,stanbon)
In a triangle ABC, angle B is 5 times angle A and angle C is 2 degrees less than 4 times... (answered by linh117)
In a triangle ABC, angle B is 4 times angle A and angle C is 15 degrees less than 5 times (answered by Fombitz)