ta có: B^+5=1,5A^\(\Leftrightarrow\)B^=1,5A^-5;C^+5=2,5A^\(\Leftrightarrow\)C^=2,5A^-5
mà tổng số đo của một tam giác : A^+B^+C^=180
\(\Leftrightarrow\)A^+(1,5A^-5)+(2,5A^-5)=180
\(\Leftrightarrow\)5A^-10=180
\(\Leftrightarrow\)5A^=190\(\Rightarrow\)A^=380
In triangle ABC, the measure of angle B is less than 1.5 times the measure of angle A and the measure of angle C is
less than 2.5 times the measure of angle A. What is the measure of angle A in degrees?
Answer: The measure of angle A is
In triangle ABC, the measure of angle B is less than 1.5 times the measure of angle A and the measure of angle C is
less than 2.5 times the measure of angle A. What is the measure of angle A in degrees?
Answer: The measure of angle A is
Câu 8:
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