13.
The angle A of a triangle ABC is equal to the sum of the other two angles. Also the ratio o
to the angle C is 2:3, then three angles are
(1) 90°,36,54 (2) 95°,49,36° (3) 95,31*,54
(4) 90°,60°, 30°
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1
Answer:
(1) is the answer
a=b+c
90= b+c
90=2x+3x
x=18
b=2x=36°
c=3x=54°
Step-by-step explanation:
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