Asked by thomas
In triangle ABC, angle B = 3, angle A and angle C = 8 angle A. How many degrees are there in angle B ?
a. 15 degree
b. 30 degree
c. 45 degree
d. 60 degree
e. 120 degree
please answer and explain
a. 15 degree
b. 30 degree
c. 45 degree
d. 60 degree
e. 120 degree
please answer and explain
Answers
Answered by
bobpursley
the sum of the angles in a triangle is 180 degrees.
A+3A+8A=180
12A=180
A=15
B=3A=45 deg
A+3A+8A=180
12A=180
A=15
B=3A=45 deg
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