Question

In triangle ABC, angle A+ angleB=65°and angleB+C=140°, than find angle B and C.
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Answer 1

Answer:

in triangle ABC,

angle A+angle B+angleC=180

angle A+ angle B=65

so, angle C=(180-65)°=115°

angle B+angle C=140

so, angle B=(140-115)°=25°

so angle B=25°

angle C=115°